Salient Features and Classification of Plants into Major Groups (Algae, Bryophytes, Pteridophytes, Gymnosperms) NEET Questions

Biology - Diversity in Living World

Salient Features and Classification of Plants into Major Groups (Algae, Bryophytes, Pteridophytes, Gymnosperms) MCQ Questions


13.
Plant body of brown algae may be:
A.
Always unicellular
B.
Always colonial
C.
Simple branched filamentous to profusely branched (e.g., kelps reaching 100m)
D.
Always coenocytic
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ANSWER :
C. Simple branched filamentous to profusely branched (e.g., kelps reaching 100m)
14.
In Phaeophyceae, the photosynthetic organ is called:
A.
Frond
B.
Stipe
C.
Holdfast
D.
Rhizoid
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ANSWER :
A. Frond
15.
Examples of Phaeophyceae include:
A.
Spirogyra and Chara
B.
Ectocarpus, Dictyota, Laminaria, Sargassum, Fucus
C.
Polysiphonia and Porphyra
D.
Anabaena and Nostoc
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ANSWER :
B. Ectocarpus, Dictyota, Laminaria, Sargassum, Fucus
16.
The red colour of red algae (Rhodophyceae) is due to:
A.
Fucoxanthin
B.
Chlorophyll b
C.
Phycoerythrin (predominant red pigment)
D.
Carotene
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ANSWER :
C. Phycoerythrin (predominant red pigment)
17.
Stored food in red algae is:
A.
Starch
B.
Floridean starch (similar to amylopectin and glycogen)
C.
Mannitol
D.
Laminarin
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ANSWER :
B. Floridean starch (similar to amylopectin and glycogen)
18.
Reproduction in red algae is generally:
A.
Vegetative only
B.
Asexual only
C.
Vegetative, asexual (non-motile spores) and sexual (oogamous, accompanied by complex post-fertilisation developments)
D.
Always isogamous
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ANSWER :
C. Vegetative, asexual (non-motile spores) and sexual (oogamous, accompanied by complex post-fertilisation developments)