Q576
Allen
PYQ
MCQ
In bryophytes and pteridophytes, transport of male gametes requires :-
A.
Wind
B.
Insects
C.
Birds
D.
Water
Q577
Allen
PYQ
MCQ
Which of the following would appear as the pioneer organisms on bare rocks?
A.
Lichens
B.
Liverworts
C.
Mosses
D.
Green algae
Q578
Allen
PYQ
MCQ
The ovule of an angiosperm is technically equivalent to :
A.
megaspore mother cell
B.
megaspore
C.
megasporangium
D.
megasporophyll
Q579
Allen
PYQ
MCQ
Conifers are adapted to tolerate extreme environmental conditions because of :
A.
thick cuticle
B.
presence of vessels
C.
broad hardy leaves
D.
superficial stomata
Q580
Allen
PYQ
MCQ
Which one of the following statements is wrong?
A.
Agar-agar is obtained from Gelidium and Gracilaria.
B.
Laminaria and Sargassum are used as food.
C.
Algae increase the level of dissolved oxygen in the immediate environment.
D.
Algin is obtained from red algae, and carrageenan from brown algae.
Q581
Allen
PYQ
MCQ
An example of colonial alga is :
A.
Volvox
B.
Ulothrix
C.
Spirogyra
D.
Chlorella
Q582
Allen
PYQ
MCQ
Zygotic meiosis is characteristic of;
A.
Fucus
B.
Funaria
C.
Chlamydomonas
D.
Marchantia
Q583
Allen
PYQ
MCQ
Life cycle of Ectocarpus and Fucus respectively are:
A.
Diplontic, Haplodiplontic
B.
Haplodiplontic, Diplontic
C.
Haplodiplontic, Haplontic
D.
Haplontic, Diplontic
Q584
Allen
PYQ
MCQ
Select the mismatch
A.
Cycas Dioecious
B.
Salvinia Heterosporous
C.
Equisetum Homosporous
D.
Pinus Dioecious
Q585
Allen
PYQ
MCQ
Which of the following statement is correct?
A.
Ovules are not enclosed by ovary wall in gymnosperms.
B.
Selaginella is heterosporous, while Salvinia is homosporous.
C.
Horsetails are gymnosperms.
D.
Stems are usually unbranched in both Cycas and Cedrus.
Q586
Allen
PYQ
MCQ
Which one is wrongly matched ?
A.
Uniflagellate gametes - Polysiphonia
B.
Biflagellate zoospores - Brown algae
C.
Gemma cups - Marchantia
D.
Unicellular organism - Chlorella
Q587
Allen
PYQ
MCQ
Winged pollen grains are present in
A.
Mustard
B.
Cycas
C.
Mango
D.
Pinus
Q588
Allen
PYQ
MCQ
Phloem in gymnosperms lacks :
A.
Albuminous cells and sieve cells
B.
Sieve tubes only
C.
Companion cells only
D.
Both sieve tubes and companion cells
Q589
Allen
PYQ
MCQ
From evolutionary point of view, retention of the female gametophyte with developing young embryo on the parent sporophyte for some time, is first observed in :
A.
Liverworts
B.
Mosses
C.
Pteridophytes
D.
Gymnosperms
Q590
Allen
PYQ
MCQ
Floridean starch has structure similar to:
A.
Laminarin and cellulose
B.
Starch and cellulose
C.
Amylopectin and glycogen
D.
Mannitol and align
Q591
Allen
PYQ
MCQ
Which of the following pairs is of unicellular algae?
A.
Chlorella and Spirulina
B.
Laminaria and Sargassum
C.
Gelidium and Gracilaria
D.
Anabaena and Volvox
Q592
Allen
PYQ
MCQ
Strobili or cones are found in :
A.
Equisetum
B.
Salvinia
C.
Pteris
D.
Marchantia
Q593
Allen
PYQ
MCQ
Phycoerythrin is the major pigment in :
A.
Red algae
B.
Blue green algae
C.
Green algae
D.
Brown algae
Q594
Allen
PYQ
MCQ
Which of the following statements is incorrect about gymnosperms ?
A.
They are heterosporous
B.
Male and female gametophytes are free living
C.
Most of them have narrow leaves with thick cuticle
D.
Their seeds are not covered
Q595
Allen
PYQ
MCQ
Male and female gametophytes do not have an independent free living existence in
A.
Pteridophytes
B.
Algae
C.
Angiosperms
D.
Bryophytes
Q596
Allen
PYQ
MCQ
Gemmae are present in :
A.
Mosses
B.
Pteridophytes
C.
Some Gymnosperms
D.
Some Liverworts
Q597
Allen
PYQ
MCQ
Genera like Selaginella and Salvinia produce two kinds of spores. Such plants are known as:
A.
Homosorus
B.
Heterosorus
C.
Homosporous
D.
Heterosporous
Q598
Allen
PYQ
MCQ
Which of the following plants is monoecious?
A.
Carica papaya
B.
Chara
C.
Marchantia polymorpha
D.
Cycas circinalis
Q599
Allen
PYQ
MCQ
Which of the following algae contains mannitol as reserve food material?
A.
Ectocarpus
B.
Gracilaria
C.
Volvox
D.
Ulothrix
Q600
Allen
PYQ
MCQ
Which of the following algae produce Carrageen ?
A.
Green algae
B.
Brown algae
C.
Red algae
D.
Blue-green algae