Question 1: Palette 1/144

NEET 2026 MCQ

A group of researchers procured some fish like animals and upon investigation the following characters were observed:

A. Endoskeleton was made of cartilage.

B. Ectoparasitic; as they were found attached on fish skin with their circular sucking mouth.

C. Paired fins and scales were absent, but 7 pairs of gill slits were present.

Which of the following species of animals did they consider to fit best with these characters?

A

Scoliodon $s p$.

B

Petromyzon $s p$.

C

Exocoetus $s p$.

D

Branchiostoma sp.

Question 2: Palette 2/144

NEET 2026 MCQ

Select the set of fishes which belong to the class Osteichthyes:

A

Devil fish, Cuttlefish and Hagfish

B

Saw fish, Fighting fish and Dog fish

C

Starfish, Hagfish and Cuttlefish

D

Flying fish, Angel fish and Fighting fish

Question 3: Palette 3/144

NEET 2026 MCQ

Select the incorrect statements from the following:

A. Digestive system in Platyhelminthes is incomplete.

B. Bilateral symmetry is a characteristic feature of adult Echinoderms.

C. Pseudocoelom is possessed by Aschelminthes.

D. Notochord is persistent throughout life in the class Chondrichthyes.

E. Members of class Reptilia maintain a constant body temperature.

Choose the answer from the options given below:

A

A and C only

B

B and E only

C

C and D only

D

B and D only

Question 4: Palette 4/144

NEET 2026 MCQ

The flightless bird with forelimbs modified as paddle-like structures suited for swimming is known as:

A

Struthio

B

Neophron

C

Aptenodytes

D

Psittacula

Question 5: Palette 5/144

NEET 2026 MCQ

Given below are two statements:

Statement I : The class name Reptilia refers to creeping or crawling mode of locomotion.

Statement II : All organisms belonging to Reptilia have three chambered heart.

In the light of the above statements, choose the most appropriate answer from the options given below:

A

Statement I is incorrect but Statement II is correct

B

Both Statement I and Statement II are correct

C

Both Statement I and Statement II are incorrect

D

Statement I is correct but Statement II is incorrect

Question 6: Palette 6/144

NEET 2026 MCQ

Which of the following is not a characteristic of chordates?

A

Presence of post anal part (tail)

B

Presence of notochord

C

Central nervous system is dorsal

D

Absence of gills

Question 7: Palette 7/144

NEET 2026 MCQ

Given below are two statements :

Statement I : When any plane passing through the central axis of the body divides the organism into two identical halves, it is called radial symmetry.

Statement II : In phylum Echinodermata, both adults and larvae are radially symmetrical.

In the light of the above statements, choose the most appropriate answer from the options given below :

A

Statement I is incorrect but Statement II is correct

B

Both Statement I and Statement II are correct

C

Both Statement I and Statement II are incorrect

D

Statement I is correct but Statement II is incorrect

Question 8: Palette 8/144

NEET 2025 MCQ

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : All vertebrates are chordates but all chordates are not vertebrate.

Reason (R) : The members of subphylum vertebrata possess notochord during the embryonic period, the notochord is replaced by cartilaginous or bony vertebral column in adults.

In the light of the above statements, choose the correct answer from the options given below:

A

(A) is true but (R) is false

B

(A) is false but (R) is true

C

Both (A) and (R) are true and (R) is the correct explanation of (A)

D

Both (A) and (R) are true but (R) is not the correct explanation of (A)

Question 9: Palette 9/144

NEET 2025 MCQ

All living members of the class Cyclostomata are :

A

Symbiotic

B

Ectoparasite

C

Free living

D

Endoparasite

Question 10: Palette 10/144

NEET 2025 MCQ

Role of the water vascular system in Echinoderms is :

A. Respiration and Locomotion

B. Excretion and Locomotion

C. Capture and transport of food

D. Digestion and Respiration

E. Digestion and Excretion

Choose the correct answer from the options given below :

A

B and C Only

B

B, D and E Only

C

A and B Only

D

A and C Only

Question 11: Palette 11/144

NEET 2025 MCQ

Which of the following statement is correct about location of the male frog copulatory pad?

A

Second digit of fore limb

B

First digit of the fore limb

C

First and Second digit of fore limb

D

First digit of hind limb

Question 12: Palette 12/144

NEET 2024 MCQ

Match List-I with List-II.

	List - I		List - II
(A)	Chondrichthyes	(I)	Clarias
(B)	Cyclostomata	(II)	Carcharodon
(C)	Osteichthyes	(III)	Myxine
(D)	Amphibia	(IV)	Ichthyophis

Choose the correct answer from the options given below :

A

A-II, B-IV, C-I, D-III

B

A-I, B-III C-II, D-IV

C

A-II, B-III, C-I, D-IV

D

A-I, B-II, C-III, D-IV

Question 13: Palette 13/144

NEET 2024 MCQ

Open Circulatory system is present in :

A

Palaemon, Nereis, Balanoglossus

B

Hirudinaria, Bombyx, Salpa

C

Anopheles, Limax, Limulus

D

Pheretima, Musca, Pila

Question 14: Palette 14/144

NEET 2024 MCQ

Which of the following pairs is an incorrect match?

A

Annelids and arthropods-Bilateral symmetry

B

Sponges-Acoelomates

C

Coelenterates and Ctenophores-Radial symmetry

D

Platyhelminthes-Diploblastic organisation

Question 15: Palette 15/144

NEET 2024 MCQ

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.

Assertion A: Members of subphylum vertebrata possess notochord during the embryonic period. The notochord is replaced by a cartilaginous or bony vertebral column in the adult.

Reason R: Thus all chordates are vertebrates not all vertebrates are chordates.

In the light of the above statements choose the correct answer from the option given below.

A

A is true but R is false.

B

A is false but R is true

C

Both A and R are true and R is the correct explanation of A.

D

Both A and R are true but R is NOT the correct explanation of A.

Question 16: Palette 16/144

NEET 2024 MCQ

Match List I with List II:

	List - I		List - II
A.	Pleurobrachia	I.	Mollusca
B.	Radula	II.	Ctenophora
C.	Stomochord	III.	Osteichthyes
D.	Air bladder	IV.	Hemichordata

Choose the correct answer from the options given below :

A

A-IV, B-II, C-III, D-I

B

A-II, B-I, C-IV, D-III

C

A-II, B-IV, C-I, D-III

D

A-IV, B-III, C-II, D-I

Question 17: Palette 17/144

NEET 2024 MCQ

Consider the following statements :

A. Annelids are true coelomates

B. Poriferans are pseudocoelomates

C. Aschelminthes are acoelomates

D. Platyhelminthes are pseudocoelomates

Choose the correct answer from the options given below :

A

B only

B

A only

C

C only

D

D only

Question 18: Palette 18/144

NEET 2024 MCQ

Match List I with List II :

	List - I		List - II
A.	Pterophyllum	I.	Hag fish
B.	Myxine	II.	Saw fish
C.	Pristis	III.	Angel fish
D.	Exocoetus	IV.	Flying fish

Choose the correct answer from the options given below :

A

A-II, B-I, C-IIII, D-IV

B

A-III, B-I, C-II, D-IV

C

A-IV, B-I, C-II, D-III

D

A-III, B-II, C-I, D-IV

Question 19: Palette 19/144

NEET 2024 MCQ

The following are the statements about non-chordates:

A. Pharynx is perforated by gill slits.

B. Notochord is absent.

C. Central nervous system is dorsal.

D. Heart is dorsal if present.

E. Post anal tail is absent.

Choose the most appropriate answer from the options given below:

A

A & C only

B

A, B & D only

C

B, D & E only

D

B, C & D only

Question 20: Palette 20/144

NEET 2023 MCQ

Match List-I with List-II.

	List - I		List - II
(A)	Contractile vacuole	(I)	Asterias
(B)	Water vascular system	(II)	Amoeba
(C)	Canal system	(III)	Spongilla
(D)	Flame cells	(IV)	Taenia

Choose the correct answer from the options given below :

A

(A)-(IV), (B)-(II), (C)-(I), (D)-(III)

B

(A)-(I), (B)-(III), (C)-(II), (D)-(IV)

C

(A)-(III), (B)-(II), (C)-(I), (D)-(IV)

D

(A)-(II), (B)-(I), (C)-(III), (D)-(IV)

Question 21: Palette 21/144

NEET 2023 MCQ

Select the correct statements :

(A) Platyhelminthes are triploblastic pseudocoelomate and bilaterally symmetrical organisms.

(B) Ctenophores reproduce only sexually and fertilization is external.

(C) In tapeworm, fertilization is internal but sexes are not separate.

(D) Ctenophores are exclusively marine, diploblastic and bioluminescent organisms.

(E) In sponges, fertilization is external and development is direct.

Choose the correct answer from the options given below :

A

(A), (C) and (D) only

B

(B), (C) and (D) only

C

(A) and (E) only

D

(B) and (D) only

Question 22: Palette 22/144

NEET 2023 MCQ

Radial symmetry is NOT found in adults of phylum ______.

A

Hemichordata

B

Coelenterata

C

Echinodermata

D

Ctenophora

Question 23: Palette 23/144

NEET 2023 MCQ

Select the correct statements with reference to chordates.

A. Presence of a mid-dorsal, solid and double nerve cord.

B. Presence of closed circulatory system.

C. Presence of paired pharyngeal gill slits.

D. Presence of dorsal heart

E. Triploblastic pseudocoelomate animals.

Choose the correct answer from the options given below:

A

B and C only

B

B, D and E only

C

C, D and E only

D

A, C and D only

Question 24: Palette 24/144

NEET 2023 MCQ

The unique mammalian characteristics are :

A

hairs, pinna and mammary glands

B

hairs, pinna and indirect development

C

pinna, monocondylic skull and mammary glands

D

hairs, tympanic membrane and mammary glands

Question 25: Palette 25/144

NEET 2022 MCQ

Which of the following animals has three chambered heart?

A

Pteropus

B

Scoliodon

C

Hippocampus

D

Chelone

Question 26: Palette 26/144

NEET 2022 MCQ

Match List-I with List-II

	List - I		List - II
(a)	Chlamydomonas	(i)	Conidia
(b)	Penicillium	(ii)	Zoospores
(c)	Hydra	(iii)	Gemmules
(d)	Sponge	(iv)	Buds

Choose the correct answer from the options given below :

A

(a) - (iv), (b) - (iii), (c) - (ii), (d) - (i)

B

(a) - (i), (b) - (iv), (c) - (iii), (d) - (ii)

C

(a) - (ii), (b) - (i), (c) - (iv), (d) - (iii)

D

(a) - (iii), (b) - (ii), (c) - (i), (d) - (iv)

Question 27: Palette 27/144

NEET 2022 MCQ

Select the incorrect statements with respect to Cyclostomes:

(a) They lack scales and paired fins.

(b) They have circular mouth with jaws.

(c) They bear 6-15 pairs of gills.

(d) They migrate to deep sea for spawning.

Choose the most appropriate answer from the options given below:

A

(a) and (d) only

B

(a) and (b) only

C

(b) and (c) only

D

(b) and (d) only

Question 28: Palette 28/144

NEET 2022 MCQ

Exoskeleton of arthropods is composed of:

A

Cutin

B

Cellulose

C

Chitin

D

Glucosamine

Question 29: Palette 29/144

NEET 2022 MCQ

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : All vertebrates are chordates but all chordates are not vertebrates.

Reason (R) : Notochord is replaced by vertebral column in the adult vertebrates.

In the light of the above statements, choose the most appropriate answer from the option given below:

A

Both (A) and (R) are correct and (R) is the correct explanation of (A)

B

Both (A) and (R) are correct but (R) is not the correct explanation of (A)

C

(A) is correct but (R) is not correct

D

(A) is not correct but (R) is correct

Question 30: Palette 30/144

NEET 2021 MCQ

Match the following :

	List-I		List-II
(a)	Physalia	(i)	Pearl oyster
(b)	Limulus	(ii)	Portuguese Man of War
(c)	Ancylostoma	(iii)	Living fossil
(d)	Pinctada	(iv)	Hookworm

Choose the correct answer from the options given below.

A

(a)	(b)	(c)	(d)
(i)	(iv)	(iii)	(ii)

B

(a)	(b)	(c)	(d)
(ii)	(iii)	(i)	(iv)

C

(a)	(b)	(c)	(d)
(iv)	(i)	(iii)	(ii)

D

(a)	(b)	(c)	(d)
(ii)	(iii)	(iv)	(i)

Question 31: Palette 31/144

NEET 2021 MCQ

Read the following statements

(1) Metagenesis is observed in Helminths.

(2) Echinoderms are triploblastic and coelomate animals.

(3) Round worms have organ-system level of body organization.

(4) Comb plates present in ctenophores help in digestion.

(5) Water vascular system is characteristic of Echinoderms.

Choose the correct answer from the options given below.

A

(2), (3) and (5) are correct

B

(3), (4) and (5) are correct

C

Round (1), (2) and (3) are correct

D

(1), (4) and (5) are correct

Question 32: Palette 32/144

NEET 2021 MCQ

Match List-I with List-II.

	List-I		List-II
(a)	Metamerism	(i)	Coelenterata
(b)	Canal system	(ii)	Ctenophora
(c)	Comb plates	(iii)	Annelida
(d)	Cnidoblasts	(iv)	Porifera

Choose the correct answer from the options given below.

A

(a)	(b)	(c)	(d)
(iv)	(i)	(ii)	(iii)

B

(a)	(b)	(c)	(d)
(iv)	(iii)	(i)	(ii)

C

(a)	(b)	(c)	(d)
(iii)	(iv)	(i)	(ii)

D

(a)	(b)	(c)	(d)
(iii)	(iv)	(ii)	(i)

Question 33: Palette 33/144

NEET 2021 MCQ

Which one of the following organisms bears hollow and pneumatic long bones?

A

Ornithorhynchus

B

Neophron

C

Hemidactylus

D

Macropus

Question 34: Palette 34/144

NEET 2020 MCQ

Bilaterally symmetrical and acoelomate animals are exemplified by

A

Platyhelminthes

B

Aschelminthes

C

Annelida

D

Ctenophora

Question 35: Palette 35/144

NEET 2020 MCQ

Which of the following statements are true for the phylum-Chordata

(i) In Urochordata notochord extends from head to tail and it is present throughout their life.
(ii) In Vertebrata notochord is present during the embryonic period only.
(iii) Central nervous system is dorsal and hollow.
(iv) Chordata is divided into 3 subphyla: Hemichordata, Tunicata and Cephalochordata.

A

(iii) and (i)

B

(i) and (ii)

C

(ii) and (iii)

D

(i) and (iii)

Question 36: Palette 36/144

NEET 2020 MCQ

If the head of cockroach is removed, it may live for few days because

A

the cockroach does not have nervous system.

B

the head holds a small proportion of a nervous system while the rest is situated along the ventral part of its body.

C

the head holds a 1/3^rd of a nervous system while the rest is situated along the dorsal part of its body.

D

the supra-oesophageal ganglia of the cockroach are situated in ventral part of abdomen.

Question 37: Palette 37/144

NEET 2020 MCQ

Match the following columns and select the correct option :

Column-I	Column-II
(a) Gregarious,       polyphagous pest	(i) Asterias
(b) Adult with radial      symmetry and larva      with bilateral symmetry	(ii) Scorpion
(c) Book lungs	(iii) Ctenoplana
(d) Bioluminescence	(iv) Locusta

A

(A)	(B)	(C)	(D)
(iv)	(i)	(ii)	(iii)

B

(A)	(B)	(C)	(D)
(iii)	(ii)	(i)	(iv)

C

(A)	(B)	(C)	(D)
(ii)	(i)	(iii)	(iv)

D

(A)	(B)	(C)	(D)
(i)	(iii)	(ii)	(iv)

Question 38: Palette 38/144

NEET 2020 MCQ

Match the following columns and select the correct option :

Column-I	Column-II
(a) 6-15 pairs of gill slits	(i) Trygon
(b) Heterocercal	(ii) Cyclostomes
(c) Air Bladder	(iii) Chondrichthyes
(d) Poison sting	(iv) Osteichthyes

A

(A)	(B)	(C)	(D)
(iii)	(iv)	(i)	(ii)

B

(A)	(B)	(C)	(D)
(iv)	(ii)	(iii)	(i)

C

(A)	(B)	(C)	(D)
(i)	(iv)	(iii)	(ii)

D

(A)	(B)	(C)	(D)
(ii)	(iii)	(iv)	(i)

Question 39: Palette 39/144

NEET 2019 MCQ

Match the following organisms with their respective characteristics:

(a)	Pila	(i)	Flame cells
(b)	Bombyx	(ii)	Comb plates
(c)	Pleurobrachia	(iii)	Radula
(d)	Taenia	(iv)	Malpighian

Select the correct option from the following :

A

(a)	(b)	(c)	(d)
(ii)	(iv)	(iii)	(i)

B

(a)	(b)	(c)	(d)
(iii)	(ii)	(iv)	(i)

C

(a)	(b)	(c)	(d)
(iii)	(ii)	(i)	(iv)

D

(a)	(b)	(c)	(d)
(iii)	(iv)	(ii)	(i)

Question 40: Palette 40/144

NEET 2019 MCQ

Consider following features:

(a) Organ system level of organisation
(b) Bilateral symmetry
(c) True coelomates with segmentation of body

Select the correct option of animal groups which possess all the above characteristics

A

Arthropoda, Mollusca and chordata

B

Annelida, Mollusca and chordata

C

Annelida, Arthropoda and chordate

D

Annelida, Arthropoda and Mollusca

Question 41: Palette 41/144

NEET 2018 MCQ

Which of the following animals does not undergo metamorphosis?

A

Tunicate

B

Starfish

C

Earthworm

D

Moth

Question 42: Palette 42/144

NEET 2018 MCQ

Identify the vertebrate group of animals characterised by crop and gizzard in its digestive system.

A

Amphibia

B

Osteichthyes

C

Reptilia

D

Aves

Question 43: Palette 43/144

NEET 2018 MCQ

Which one of these animals is not a homeotherm?

A

Chelone

B

Macropus

C

Psittacula

D

Camelus

Question 44: Palette 44/144

NEET 2017 MCQ

In case of poriferans, the spongocoel is lined with flagellated cells called

A

mesenchymal cells

B

oscula

C

ostia

D

choanocytes

Question 45: Palette 45/144

NEET 2017 MCQ

Which of the following represents order of 'Horse'?

A

Perissodactyla

B

Caballus

C

Ferus

D

Equidae

Question 46: Palette 46/144

NEET 2017 MCQ

In case of proiferans, the spongocoel is lined with flagellated cells called

A

oscula

B

choanocytes

C

mesenchymal cells

D

ostia.

Question 47: Palette 47/144

NEET 2017 MCQ

Important characteristic that hemichordates share with chordates is

A

ventral tubular nerve cord

B

pharynx with gill slits

C

pharynx without gill slits

D

absence of motochord.

Question 48: Palette 48/144

NEET 2017 MCQ

Which among these is the correct combination of aquatic mammals?

A

Dolphins, Seals, Trygon

B

Whales, Dolphins, Seals

C

Trygon, Whales, Seals

D

Seals, Dolphins, Sharks

Question 49: Palette 49/144

NEET 2016 MCQ

Match column I with column II for housefly classification and select the correct option using the codes given below.

Column ${\rm I}$			Column ${\rm I}$${\rm I}$
(A)	Family		(i)	Diptera
(B)	Order		(ii)	Arthropoda
(C)	Class		(iii)	Muscidae
(D)	Phylum		(iv)	Insecta

A

(A)-(iii),  (B)-(i),  (C)-(iv),  (D)-(ii)

B

(A)-(iii),  (B)-(ii),  (C)-(iv),  (D)-(i)

C

(A)-(iv),  (B)-(iii),  (C)-(ii),  (D)-(i)

D

(A)-(iv),  (B)-(ii),  (C)-(i),  (D)-(iii)

Question 50: Palette 50/144

NEET 2016 MCQ

Choose the correct statement

A

All mammals are viviparous.

B

All cyclostomes do not posses jaws and paired fins.

C

All reptiles have a three-chambered heart.

D

All pisces have gills covered by an operculum.

Question 51: Palette 51/144

NEET 2016 MCQ

Which of the following features is not present in the Phylum Arthropoda?

A

Parapodia

B

Jointed appendages

C

Chitinous exoskeleton

D

Metameric segmentation

Question 52: Palette 52/144

NEET 2016 MCQ

Which one of the following characteristics is not shared by birds and mammals?

A

Viviparity

B

Warm blooded nature

C

Ossified endoskeleton

D

Breathing using lungs

Question 53: Palette 53/144

NEET 2016 MCQ

Which of the following characteristic features always holds true for the corresponding group of animals?

A

Possess a mouth with an upper and a lower jaw	Chordata

B

3-chambered heart with one incompletely divided ventricle	Reptilia

C

Cartilaginous endoskeleton	Chondrichthyes

D

Viviparous	Mammalia

Question 54: Palette 54/144

NEET 2015 MCQ

Body having meshwork of cells, internal cavities lined with food filtering flagellated cells and indirect development are the characteristics of Phylum

A

Mollusca

B

Protozoa

C

Coelenterata

D

Porifera.

Question 55: Palette 55/144

NEET 2015 MCQ

Metagenesis refers to

A

occurrence of a drastic change in form during post-embryonic development

B

presence of a segmented body and parthenogenetic mode of reproduction

C

presence of different morphic forms

D

alternation of generation between asexual and sexual phases of an organisms.

Question 56: Palette 56/144

NEET 2015 MCQ

A jawless fish, which lays eggs in fresh water and whose ammocoetes larvae after metamorphosis return to the ocean is

A

Neomyxine

B

Petromyzon

C

Eptatretus

D

Myxine

Question 57: Palette 57/144

NEET 2015 MCQ

Which of the following animals is not viviparous?

A

Platypus

B

Whale

C

Flying fox (Bat)

D

Elephant

Question 58: Palette 58/144

NEET 2015 MCQ

Which of the following represents the correct combination without any exception?

A

Characteristics	Class
Sucking and circular mouth; jaws absent,integument without scals; paired appendages.	Cyclostomata

B

Characteristics	Class
Body covered with feathers; skin moist and glandular, forelimbs form wings; lungs- with air sacs.	Aves

C

Characteristics	Class
Mammary gland; hair on body; pinnae; two pairs of limbs.	Mammalia

D

Characteristics	Class
Mouth ventral; gills without operculum; skin with placoid scales; persistent notochord.	Chondrichthyes

Question 59: Palette 59/144

NEET 2015 MCQ

Which of the following endoparasites of humans does show viviparity?

A

Trichinella spiralis

B

Ascaris lumbricoides

C

Ancylostoma duodenale

D

Enterobius vermicularis

Question 60: Palette 60/144

NEET 2015 MCQ

Which of the following characteristics is mainly responsible for diversification of insects on land?

A

Exoskeleton

B

Eyes

C

Segmentation

D

Bilateral symmetry

Question 61: Palette 61/144

NEET 2014 MCQ

Select the taxon mentioned that represents both marine and fresh water species.

A

Echinoderms

B

Ctenophora

C

Cephalochordata

D

Cnidaria

Question 62: Palette 62/144

NEET 2014 MCQ

Planaria possesses high capacity of

A

alternation of generation

B

regeneration

C

bioluminescence.

D

metamorphosis

Question 63: Palette 63/144

NEET 2014 MCQ

Which one of the following living organisms completely lacks a cell wall?

A

Cyanobacteria

B

Sea - fan (Gorgonia)

C

Saccharomyces

D

Blue - green algae

Question 64: Palette 64/144

NEET 2014 MCQ

A marine cartilaginous fish that can produce electric current is

A

Pristis

B

Torpedo

C

Trygon

D

Scoliodon.

Question 65: Palette 65/144

NEET 2014 MCQ

Planaria possesses high capacity of

A

metamorphosis

B

regeneration

C

alternation of generation

D

bioluminescence.

Question 66: Palette 66/144

NEET 2013 MCQ

Which one of the following groups of animals reproduces only by sexual means?

A

Cnidaria

B

Porifera

C

Protozoa

D

Ctenophora

Question 67: Palette 67/144

NEET 2013 MCQ

The characteristics of Class Reptilia are

A

body covered with moist skin which is devoid of scales, the ear is represented by a tympanum, alimentary canal, urinary and reproductive tracts open into a common cloaca

B

fresh water animals with bony endoskeleton, air-bladder to regulate buoyancy

C

marine animals with cartilaginous endoskeleton, body covered with placoid scales

D

body covered with dry and cornified skin, scales over the body are epidermal, they do not have external ears.

Question 68: Palette 68/144

NEET 2013 MCQ

Which one of the following is one of the paths followed by air or O₂ during respiration in the adult male Periplaneta americana it enters the animal body?

A

Spiracle in metathorax, trachea, tracheloes, oxygen diffuses into cells

B

Mouth, bronchial tube, trachea, oxygen enters cells

C

Spiracles in prothorax, tracheoles, trachea, oxygen diffuses into cells.

D

Hypopharynx, mouth, pharynx, trachea, tissues

Question 69: Palette 69/144

NEET 2013 MCQ

Sharks and dogfishes differ from skates and rays because

A

gill slits are ventrally placed

B

head and turnk are widened considerably

C

distinct demarcation between body and tail

D

their pectoral fins distinctly marked off from cylindrical bodies.

Question 70: Palette 70/144

NEET 2013 MCQ

Which one of the following animals is correctly matched with its one characteristic and the taxon?

A

Animal	Characteristic	Taxon
Millipede	Ventral nerve	Arachnida

B

Animal	Characteristic	Taxon
Sea anemone	Triploblastic	Cnidaria

C

Animal	Characteristic	Taxon
Silverfish	Pectoral and pelvic fins	Chordata

D

Animal	Characteristic	Taxon
Duckbilled platypus	Oviparous	Mammalia

Question 71: Palette 71/144

NEET 2013 MCQ

One of the representatives of Phylum Arthropoda is

A

puffer fish

B

flying fish

C

cuttle fish

D

silver fish.

Question 72: Palette 72/144

NEET 2013 MCQ

Which of the following are correctly matched with respect to their taxonomic classification?

A

House fly, butterfly, tse tse fly, silverfish-Insecta

B

Spiny anteater, sea urchin, sea cucumber - Echinodermata

C

Flying fish, cuttlefish, silverfish-Pisces

D

Centipede, millipede, spider, scorpion-Insecta

Question 73: Palette 73/144

NEET 2013 MCQ

Match the name of the animal (column I), with one characteristic (column II), and the phylum/class (column III) to which it belongs.

A

Column ${\rm I}$	Column ${\rm I}$${\rm I}$	Column ${\rm I}$${\rm I}$${\rm I}$
Limulus	Body covered by chitinous exoskeleton	Pisces

B

Column ${\rm I}$	Column ${\rm I}$${\rm I}$	Column ${\rm I}$${\rm I}$${\rm I}$
Adamsia	Radially symmetrical	Porifera

C

Column ${\rm I}$	Column ${\rm I}$${\rm I}$	Column ${\rm I}$${\rm I}$${\rm I}$
Petronmyzon	Ectoparasite	Cyclostomata

D

Column ${\rm I}$${\rm I}$	Column ${\rm I}$${\rm I}$	Column ${\rm I}$${\rm I}$${\rm I}$
Ichthyophis	Terrestrial	Reptilia

Question 74: Palette 74/144

NEET 2013 MCQ

Which group of animals belong to the same phylum?

A

Prawn, Scorpion, Locusta

B

Sponge, Sea anemone, Starfish

C

Malarial parasite, Amoeba, Mosquito

D

Earthworm, Pinworm, Tapeworm

Question 75: Palette 75/144

NEET 2012 MCQ

Which one of the following categories of animals, is correctly described with no single exception in it?

A

All reptiles posses scales, have a three chambered heart and are cold blooded (poikilothermal).

B

All bony fishes have four pairs of gills and an operculum on each side.

C

All sponges are marine and have collared cells.

D

All mammals are viviparous and possess diaphargm for breathing.

Question 76: Palette 76/144

NEET 2012 MCQ

Which one of the following pairs of animals are similar to each other pertaining to the feature stated against them?

A

Pteropus and Ornithorhynchus		_		Viviparity

B

Garden lizard and crocodile		_		Three chambered heart

C

Ascaris and Ancylostoma		-		Metameric segmentation

D

Sea horse and flying fish		-		Cold blooded (poikilothermal)

Question 77: Palette 77/144

NEET 2012 MCQ

In which one of the following, the genus name, its two characters and its phylum are not correctly matched, whereas the remaining three are correct?

A

Genus name		Two characters		Class/Phylum
Pila		(a)  Body segmented (b)  Mouth with radula		Mollusca

B

Genus name		Two characters		Class/Phylum
Asteria		(a)  Spiny Skinned (b)  Water vascular system		Echinoermata

C

Genus name		Two characters		Class/Phylum
Sycon		(a)  Pore bearing (b)  Canal system		Porifera

D

Genus name		Two characters		Class/Phylum
Periplaneta		(a)  Jointed appendages (b)  Chitinous exoskeleton		Arthropoda

Question 78: Palette 78/144

NEET 2012 MCQ

Pheretima and its close relatives derive nourishment from

A

sugarcane roots

B

decaying fallen leaves and soil organic matter

C

soil insects

D

small pieces of fresh fallen leaves of maize, etc.

Question 79: Palette 79/144

NEET 2011 MCQ

The figures (A – D) show four animals. Select the correct option with respect to a common characteristic of two of these animals.

A

(A) and (B) have cnidoblasts for selfdefence

B

(A) and (D) respire mainly through body wall

C

(C) and (D) have a true coelom

D

(B) and (C) show radial symmetry

Question 80: Palette 80/144

NEET 2011 MCQ

Which one of the following statements is totally wrong about the occurrence of notochord, while the other three are correct?

A

It is present only in larval tail in ascidian.

B

It is replaced by a vertebral column in adult frog.

C

It is absent throughout life in humans form the very beginning.

D

It is present throughout life in Amphioxus.

Question 81: Palette 81/144

NEET 2011 MCQ

Consider the following four statements (A$-$D) related to the common frog Rana tigrina, and select the correct option starting which ones are true (T) and which ones are false (F). Statements:
A.  On dry land it would die due to lack of O₂ if its mouth is forcibly kept closed for a few days.
B.  It has four-chambered heart.
C.  On dry land it turns uricotelic from ureotelic.
D.  Its life-history is carried out in pond water.

A

A-T,  B-F,  C-F,  D-T

B

A-T,  B-T,  C-F,  D-F

C

A-F,  B-F,  C-T,  D-T

D

A-F,  B-T,  C-T,  D-F

Question 82: Palette 82/144

NEET 2011 MCQ

Ureters act as urinogenital ducts in

A

human males

B

human females

C

both male and female frogs

D

male frogs

Question 83: Palette 83/144

NEET 2011 MCQ

In which one of the following the genus name, its two characters and its class/phylun are correctly matched?

A

Genus name		Two characters		Class/Phylum
Ascaris		(i)  Body segmented (ii)  Males and feamales distinct		Annelida

B

Genus name		Two characters		Class/Phylum
Salamandra		(i) A tympanum represents ear (ii) Fertilization is external		Amphibia

C

Genus name		Two characters		Class/Phylum
Pteropus		(i) Skin possessess (ii) Oviparous		Mammalia

D

Genus name		Two characters		Class/Phylum
Aurelia		(i) Cnidoblasts (ii) Organ level of organization		Coelenterata

Question 84: Palette 84/144

NEET 2011 MCQ

Which one of the following groups of animals is correctly matched with its characteristic feature without any exception?

A

Reptilia : posses 3-chambeared heart with an incomplrtrly divided ventricle

B

Chordata : possess a mouth with an upper and a lower jaw

C

Chondrichthyes : possess cartilaginous endoskeleton

D

Mammalia : give birth to young ones

Question 85: Palette 85/144

NEET 2011 MCQ

What will you look for to identify the sex of the following?

A

Female Ascaris-sharply curved posterior end

B

Male frog- a copulatory pad on the first digit of the hind limb

C

Female cockroach-anal cerci

D

Male shark-claspers brone on pelvic fins

Question 86: Palette 86/144

NEET 2010 MCQ

In which one of the following organisms its excretory organs are correctly stated?

A

Humans :-      Kidneys, Sebaceous glands and tear glands

B

Earthworm :-      Pharyngeal, integumentary and septal nephridia

C

Cockroach :-      Malpighian tubules and enteric caeca

D

Frog :-      Kidneys, skin and buccal epithelium

Question 87: Palette 87/144

NEET 2010 MCQ

Crocodile and penguin are similar to whale and dogfish in which one of the following features?

A

Possess a solid single stranded central nervous system

B

Lay eggs and guard them till they hatch

C

Possess bony skeleton

D

Have gill slits at some stage

Question 88: Palette 88/144

NEET 2010 MCQ

Which one of the following statements about all the four of Spongilla, leech, dolphin and penguin is correct?

A

Penguin is homoiothermic while the remaining three are poikilothermic.

B

Leech is a fresh water form while all others are marine.

C

Spongilla has special collared cells called choanocytes, not found in the remaining three. All arebilaterally symmetrical.

D

All are bilaterally symmetrical.

Question 89: Palette 89/144

NEET 2010 MCQ

One example of animals having a single opening to the outside that serves both as mouth as well as anus is

A

Octopus

B

Asterias

C

Ascidia

D

Fasciola.

Question 90: Palette 90/144

NEET 2010 MCQ

Which one of the following kinds of animals are triploblastic?

A

Flatworms

B

Sponges

C

Ctenophores

D

Corals

Question 91: Palette 91/144

NEET 2010 MCQ

Which one of the following statements about certain given animals is correct?

A

Roundworms (Aschelminthes) are pseudo-coelomates

B

Molluses are acoelomates

C

Inssect are pseudocoelomates

D

Flatworms (Platyhelminthes) are coelomates.

Question 92: Palette 92/144

NEET 2009 MCQ

Which one of the following pairs of animals comprises 'jawless fishes'?

A

Mackerals and rohu

B

Lampreys and hag fishes

C

Guppies and hag fishes

D

Lampreys and eels

Question 93: Palette 93/144

NEET 2009 MCQ

Which one of the following groups of animals is bilaterally symmetrical and triploblastic?

A

Aschelminthes (round worms)

B

Ctenophores

C

Sponges

D

Coelenterates (cnidarians)

Question 94: Palette 94/144

NEET 2009 MCQ

If a live earthworm is pricked with a needle on its outer surface without damaging its gut, the fluid that comes out is

A

coelomic fluid

B

haemolymph

C

slimy mucus

D

excretory fluid.

Question 95: Palette 95/144

NEET 2008 MCQ

Which one of the following is not a characteristic of Phylum Annelida?

A

Pseudocoelom

B

Ventral nerve cord

C

Closed circulatory system

D

Segmentation

Question 96: Palette 96/144

NEET 2008 MCQ

Which one of the following phyla is correctly matched with its two general characteristics?

A

echinodermata - pentamerous radial symmetry and mostly internal fertilization

B

Mollusca - normally oviparous and development through a trochophore or veliger larva

C

Arthropoda - body divided into head, thorax and abdomen and respiration by tracheae

D

Chordata - notochord at some stage and separate anal and urinary openings to the outside.

Question 97: Palette 97/144

NEET 2008 MCQ

Which one of the following groups of three animals each is correctly matched with their one characteristic morphological feature?

A

Animals		Morphological features
Scorpion, spider,		ventral solid central cockroach nervous system

B

Animals		Morphological features
Cockroach, locust, Taenia		metameric segmentation

C

Animals		Morphological features
Liver fluke, sea anemone, sea cucumber		bilateral symmetry

D

Animals		Morphological features
Centipede, prawn, sea urchin		jointed appendages

Question 98: Palette 98/144

NEET 2008 MCQ

Ascaris is characterized by

A

presence of true coelom but absence of metamerism

B

presence of true coelom and metamerism (metamerisation)

C

absence of true coelom but presence of metamerism

D

presence of neither true coelom nor metamerism.

Question 99: Palette 99/144

NEET 2008 MCQ

Which one of the following pairs of items correctly belongs to the category of organs mentioned against it?

A

Nephridia of earthworm and Malpighian tubules of cockroach - excretory organs

B

wings of honey bee and wings of crow homologous organs

C

Thorn of Bougainvillea and tendrils of Cucurbita - analogous organs

D

Nictitating membrane and blind spot in human eye - vestigial organs

Question 100: Palette 100/144

NEET 2008 MCQ

Which one of the following in birds, indicates their reptilian ancestry?

A

Two special chambers crop and gizzard in their digestive tract

B

Eggs with a calcareous shell

C

Scales on their hind limbs

D

Four-chambered heart

Question 101: Palette 101/144

NEET 2007 MCQ

What is true about Nereis, scorpion, cockroach and silver fish?

A

They all possess dorsal heart.

B

None of them is aquatic.

C

They all belong to the same phylum.

D

They all have jointed paired appendages.

Question 102: Palette 102/144

NEET 2007 MCQ

Which of the following pairs are correctly matched?

	Animals		Morphological features
(i)	Crocodile	-	4-chambered heart
(ii)	Sea urchin	-	Parapodia
(iii)	Obelia	-	Metagenesis
(iv)	Lemur	-	Thecodont

A

(ii), (iii) and (iv)

B

only (i) and (iv)

C

only (i) and (ii)

D

(i), (iii) and (iv)

Question 103: Palette 103/144

NEET 2007 MCQ

Which one of the following is a matching pair of body feature and the animal possessing it?

A

Ventral central nervous system    -   Leech

B

Pharyngeal gill slits absent in embryo  -   Chamaeleon

C

Ventral heat  -   Scorpion

D

Post-anal tail       -   Octopus

Question 104: Palette 104/144

NEET 2007 MCQ

What is common between parrot, platypus and kangaroo?

A

Toothless Jaws

B

Functional post-anal tail

C

Ovoparity

D

Homoiothermy

Question 105: Palette 105/144

NEET 2006 MCQ

What is common about Trypanosoma, Noctiluca, Monocystis and Giardia?

A

These are all parasities.

B

These are all unicellular protists.

C

They have flagella.

D

They produce spores.

Question 106: Palette 106/144

NEET 2006 MCQ

Annual migration does not occur in the case of

A

arctic term

B

salmon

C

siberian crene

D

salamander

Question 107: Palette 107/144

NEET 2006 MCQ

Metameric segmentation is the characteristic of

A

mollusca and chordata

B

platyhelminthes and arthropoda

C

echinodermata and annelida

D

annelida and arthropoda.

Question 108: Palette 108/144

NEET 2006 MCQ

In which one of the following sets of animals do all the four give birth to young ones?

A

Kangaroo, hedgehog, dolphin, Loris

B

Lion, bat, whale, ostrich

C

Platypus, penguin, bat, hippopotamus

D

shrew, bat, cat, kiwi

Question 109: Palette 109/144

NEET 2006 MCQ

Which one of the following is a matching set of a phylum and its three examples?

A

Porifera   -  Spongilla, Euplectella, Pennatula

B

Cnidaria  -  Bonellia, Physalia, Aurelia

C

Platyhelminthes  -  Planaria, Schistosoma, Enterobius

D

Mollusca  -  Loligo, Teredo, Octopus

Question 110: Palette 110/144

NEET 2006 MCQ

Two common characters found in centipede, cockroach, and crab are

A

book lungs and antennae

B

compound eyes and anal cerci

C

jointed legs and chitinous exoskeleton

D

green gland and tracheae.

Question 111: Palette 111/144

NEET 2006 MCQ

Biradial symmetry and lack of cnidoblasts are the characteristic of

A

Hydra and starfish

B

starfish and sea anemone

C

Ctenoplana and Beroe

D

Aurelia and Paramecium.

Question 112: Palette 112/144

NEET 2006 MCQ

Which one of the following is not a living fossil?

A

Peripatus

B

King crab

C

Sphenodon

D

Archaeopteryx

Question 113: Palette 113/144

NEET 2005 MCQ

In contrast to annelids the platyhelminthes show

A

absence of body cavity

B

bilateral symmetry

C

radial symmetry

D

presence of pseudocoel.

Question 114: Palette 114/144

NEET 2005 MCQ

From the following statements select the wrong one

A

Prawn has two pairs of antennae.

B

Nematocysts are characteristics of the phylum cnidaria.

C

Millepedes have two pairs of appendages in each segment of the body.

D

Animals belonging to phylum porifera are marine and frsh water.

Question 115: Palette 115/144

NEET 2005 MCQ

The world's highly prized wool yielding 'Pashmina' breed is -

A

Sheep

B

Goat-sheep cross

C

Kashmir sheep-Afghan sheep cross

D

Goat

Question 116: Palette 116/144

NEET 2005 MCQ

Which one of the following characters is not typical of the class mammalia?

A

Thecodont dentition

B

Alveolar lungs

C

Ten pairs of cranial nerves

D

Seven cervical vertebrae

Question 117: Palette 117/144

NEET 2005 MCQ

Which of the following unicellular organisms has a macronucleus for trophic function and one or more micronuclei for reproduction?

A

Euglena

B

Amoeba

C

Paramecium

D

Trypanosoma

Question 118: Palette 118/144

NEET 2004 MCQ

In Arthropoda, hend and thorax are often used to form cephalothorax, but in which one of the following classes, is the body divided into head thorax and abdomen?

A

Insecta

B

Myriapoda

C

Crustacea

D

Arachnida and curstacea

Question 119: Palette 119/144

NEET 2004 MCQ

Uricotelism is found in

A

mammals and birds

B

fish and fresh water protozoans

C

birds, land reptiles and insects

D

frogs and toads.

Question 120: Palette 120/144

NEET 2004 MCQ

When a fresh-water protozoan possessing a contractile vacuole, is placed in a glass containing marrine water, the vacuole will

A

increase in number

B

disappear

C

increase in size

D

decrease in size

Question 121: Palette 121/144

NEET 2004 MCQ

Presence of gills in the tadpole of frog indicates that

A

fish were amphibious in the past

B

fish evolved from frog-like ancestors

C

frog will have gills in future

D

frog evolved from gilled ancestors.

Question 122: Palette 122/144

NEET 2004 MCQ

The animals with bilateral symmetry in young stage, and radial pentamerous symmetry in the adult stage, belong to the Phylum

A

Annelida

B

Mollusca

C

Cnidaria

D

Echinodermata.

Question 123: Palette 123/144

NEET 2004 MCQ

One of the following is a very unique feature of the mammalian body

A

homeothermy

B

presence of diaphragm

C

four chambered heart

D

rib cage.

Question 124: Palette 124/144

NEET 2003 MCQ

Ommatidia serve the purpose of photoreception in

A

cockroach

B

frog

C

humans

D

sunflower.

Question 125: Palette 125/144

NEET 2003 MCQ

Systemic heart refers to

A

the heart that contracts under stimulation from nervous system

B

left auricle and left ventricle in higher vertebrates

C

entire heart in lower vertebrates

D

the two ventricles together in humans.

Question 126: Palette 126/144

NEET 2003 MCQ

During the life-cycle, Fasciola hepatica (liver fluke) infects its intermediate host and primary host at the following larval stages respectively

A

redia and miracidium

B

cercaria and redia

C

metacercaria and cercaria

D

miracidium and metacercaria

Question 127: Palette 127/144

NEET 2003 MCQ

Given below are four matchings of an animal and its kind of respiratory organ :
(A)  Silver fish      $-$      Trachea
(B)  Scorpion      $-$      Book lung
(C)  Sea squirt      $-$      Pharyngeal slits
(D)  Dolphin      $-$      Skin
The correct matchings are

A

(A) and (B)

B

(A), (B) and (C)

C

(B) and (D)

D

(C) and (D).

Question 128: Palette 128/144

NEET 2003 MCQ

The chief advantage of encystment of an Amoeba is

A

the ability to survive during adverse physical conditions

B

the ability to live for some time without ingesting food

C

protection from parasites and predators

D

the chance to get rid of accumulated waste products.

Question 129: Palette 129/144

NEET 2003 MCQ

Which one of the following is a matching pair of an animal and a certain phenomenon it exhibits?

A

Pheretima      $-$      Sexual dimorphism

B

Musca      $-$      Complete metamorphosis

C

Chameleon      $-$      Mimicry

D

Taenia      $-$      Polymorphism

Question 130: Palette 130/144

NEET 2003 MCQ

Sycon belongs to a group of animals, which are best described as

A

unicellular or acellular

B

multicellular without any tissue organization

C

multicellular with a gastrovascular system

D

multicellular having tissue organization, but no body cavity.

Question 131: Palette 131/144

NEET 2003 MCQ

Bartholin's glands are situated

A

on the sides of the head of some amphibians

B

at the reduced tail end of birds

C

on either side of vagina in humans

D

on either side of vas deferens in humans.

Question 132: Palette 132/144

NEET 2002 MCQ

In which of the following animals nerve cell is present but brain is absent?

A

sponge

B

Earthworm

C

Cockroach

D

Hydra

Question 133: Palette 133/144

NEET 2002 MCQ

In which of the following, notochord is present in embryonic stage?

A

All chordates

B

Some chordates

C

Vertebrates

D

Non chordates

Question 134: Palette 134/144

NEET 2002 MCQ

In protozoa like Amoeba and Paramecium, the organ for osmoregulation is

A

contractile vacuole

B

mitochondria

C

nucleus

D

food vacuole.

Question 135: Palette 135/144

NEET 2002 MCQ

In which of the following animals dimorphic nucleus is found?

A

Amoeba proteus

B

Trypanosoma gambiense

C

Plasmodium vivax

D

Paramecium caudatum

Question 136: Palette 136/144

NEET 2001 MCQ

In Hydra, waste material of food digestion and nitrogenous waste material are removed respectively from

A

mouth and mouth

B

body wall and body wall

C

mouth and body wall

D

mouth and tentacles.

Question 137: Palette 137/144

NEET 2001 MCQ

In which of the following animals, haemocyanin pigment is found?

A

Annelida

B

Echinodermata

C

Insecta

D

Mollusca

Question 138: Palette 138/144

NEET 2001 MCQ

In which of the following animals post anal tail is found?

A

Earthworm

B

Lower invertebrates

C

Scorpion

D

Snake

Question 139: Palette 139/144

NEET 2000 MCQ

Cleavage in mammals is

A

holoblastic equal

B

holoblastic unequal

C

superficial

D

discoidal.

Question 140: Palette 140/144

NEET 2000 MCQ

Which of the following animals have scattered cells with cell - tissue grade organisation?

A

Sponge

B

Hydra

C

Liver fluke

D

Ascaris

Question 141: Palette 141/144

NEET 2000 MCQ

What is true for mammalia?

A

Platypus is oviparous.

B

Bats have feather.

C

Elephant is ovoviviparous.

D

Diaphragm is absent in them.

Question 142: Palette 142/144

NEET 2000 MCQ

What happens if bone of frog is kept in dilute hydrochloric acid?

A

Will become flexible

B

Will turn black

C

will break into pieces

D

Will shrink

Question 143: Palette 143/144

NEET 2000 MCQ

Similarly in Ascaris lumbricoides and Anopheles stephensi is

A

sexual dimorphism

B

metamerism

C

anaerobic respiration

D

endoparasitism.

Question 144: Palette 144/144

NEET 2000 MCQ

Which of the following characters is absent in all chordates?

A

Diaphragam

B

Coelom

C

Pharyngeal gill clefts

D

Dorsal nerve cord