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Biological Classification

1051 Questions Start Allen Test
All Exams Allen Errorless
Q801 Allen PYQ MCQ
Select the wrong statement :-
A.
Diatoms are chief producers in the oceans.
B.
Diatoms are microscopic and float passively in water.
C.
The walls of diatoms are easily destructible.
D.
'Diatomaceous earth' is formed by the cell walls of diatoms.
Q802 Allen PYQ MCQ
Select the mismatch :-
A.
Protists-Eukaryotes
B.
Methanogens-Prokaryotes
C.
Gas vacuoles-Green bacteria
D.
Large central vacuoles - Animal cells
Q803 Allen PYQ MCQ
Select the wrong statement :-
A.
Cyanobacteria lack flagellated cells.
B.
Mycoplasma is a wall-less microorganism
C.
Bacterial cell wall is made up of peptidoglycan.
D.
Pilli and fimbriae are mainly involved in motility of bacterial cells
Q804 Allen PYQ MCQ
Which of the following sets of diseases is caused by bacteria?
A.
Tetanus and mumps
B.
Herpes and influenza
C.
Cholera and tetanus
D.
Typhoid and smallpox
Q805 Allen PYQ MCQ
Which of the following are found in extreme saline conditions ?
A.
Eubacteria
B.
Cyanobacteria
C.
Mycobacteria
D.
Archaebacteria
Q806 Allen PYQ MCQ
Select the mismatch :-
A.
Rhodospirillum ā€” Mycorrhiza
B.
Anabaena ā€” Nitrogen fixer
C.
Rhizobium ā€” Alfalfa
D.
Frankia ā€” Alnus
Q807 Allen PYQ MCQ
Which of the following components provides sticky character to the bacterial cell ?
A.
Nuclear membrane
B.
Plasma membrane
C.
Glycocalyx
D.
Cell wall
Q808 Allen PYQ MCQ
Viroids differ from viruses in having :-
A.
DNA molecules without protein coat
B.
RNA molecules with protein coat
C.
RNA molecules without protein coat
D.
DNA molecules with protein coat
Q809 Allen PYQ MCQ
Which of the following is correctly matched for the product produced by them ?
A.
Methanobacterium : Lactic acid
B.
Penicillium notatum : Acetic acid
C.
Saccharomyces cerevisiae : Ethanol
D.
Acetobacter aceti : Antibiotics
Q810 Allen PYQ MCQ
Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen ?
A.
Pseudomonas
B.
Mycoplasma
C.
Nostoc
D.
Bacillus
Q811 Allen PYQ MCQ
Which among the following is not a prokaryote?
A.
Saccharomyces
B.
Mycobacterium
C.
Nostoc
D.
Oscillatoria
Q812 Allen PYQ MCQ
Select the wrong statement:
A.
Cell wall is present in members of fungi and plantae
B.
Mushrooms belong to basidiomycetes
C.
Pseudopodia are locomotory and feeding structures in sporozoans
D.
Mitochondria are the powerhouse of the cell in all kingdoms except Monera
Q813 Allen PYQ MCQ
After karyogamy followed by meiosis, spores are produced exogenously in:
A.
Neurospora
B.
Alternaria
C.
Agaricus
D.
Saccharomyces
Q814 Allen PYQ MCQ
Oxygen is not produced during photosynthesis by: A) Green sulphur bacteria B) Nostoc C) Cycas D) Chara
Q815 Allen PYQ MCQ
Which of the following organisms are known as chief producers in the oceans ?
A.
Dinoflagellates
B.
Diatoms
C.
Cyanobacteria
D.
Euglenoids
Q816 Allen PYQ MCQ
Which of the following statements is incorrect?
A.
Morels and truffles are edible delicacies.
B.
Claviceps is a source of many alkaloids and LSD.
C.
Conidia are produced exogenously and ascospores endogenously.
D.
Yeasts have filamentous bodies with long thread-like hyphae.
Q817 Allen PYQ MCQ
Which of the following statements is incorrect?
A.
Viroids lack a protein coat.
B.
Viruses are obligate parasites.
C.
Infective constituent in viruses is the protein coat.
D.
Prions consist of abnormally folded proteins.
Q818 Allen PYQ MCQ
Thiobacillus is a group of bacteria helpful in carrying out:
A.
Nitrogen fixation
B.
Chemoautotrophic fixation
C.
Nitrification
D.
Denitrification
Q819 Allen PYQ Match the Columns
Match Column-I with Column-II.
Column-IColumn-II
(a)Saprophyte
(b)Parasite
(c)Lichens
(d)Mycorrhiza
(i)Symbiotic association of fungi with plant roots
(ii)Decomposition of dead organic materials
(iii)Living on living plants or animals
(iv)Symbiotic association of algae and fungi
A.
a-i, b-ii, c-iii, d-iv
B.
a-iii, b-ii, c-i, d-iv
C.
a-ii, b-i, c-iii, d-iv
D.
a-ii, b-iii, c-iv, d-i
Q820 Allen PYQ Match the Columns
Match the organisms in column-I with habitats in column-II.
Column-IColumn-II
(a)Halophiles
(b)Thermoacidophiles
(c)Methanogens
(d)Cyanobacteria
(i)Hot springs
(ii)Aquatic environment
(iii)Guts of ruminants
(iv)Salty area
A.
(a)-(iv),(b)-(i), (c)-(iii), (d)-(ii)
B.
(a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
C.
(a)-(iii),(b)-(iv), (c)-(ii), (d)-(i)
D.
(a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)
Q821 Allen PYQ MCQ
Mad cow disease in cattle is caused by an organism which has :-
A.
inert crystalline structure
B.
abnormally folded protein
C.
free RNA without protein coat
D.
free DNA without protein coat
Q822 Allen PYQ MCQ
Which of the following statements is correct ?
A.
Lichens do not grow in polluted areas.
B.
Algal component of lichens is called mycobiont.
C.
Fungal component of lichens is called phycobiont
D.
Lichens are not good pollution indicators.
Q823 Allen PYQ MCQ
Which of the following bacteria reduce nitrate in soil into nitrogen ?
A.
Nitrobacter
B.
Nitrococcus
C.
Thiobacillus
D.
Nitrosomonas
Q824 Allen PYQ MCQ
Among the following pairs of microbes, which pair has both the microbes that can be used as biofertilizers?
A.
Aspergillus and Rhizopus
B.
Rhizobium and Rhizopus
C.
Cyanobacteria and Rhizobium
D.
Aspergillus and Cyanobacteria
Q825 Allen PYQ MCQ
Which of the following statements about methanogens is not correct?
A.
They can be used to produce biogas.
B.
They are found in the rumen of cattle and their excreta.
C.
They grow aerobically and breakdown cellulose-rich food.
D.
They produce methane gas.