Plant Kingdom
- Floridean starch is found in
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Reserve food in red algae (Rhodophyceae) is Floridean starch. In green algae, (Chlorophyceae), reserve food is starch. In brown algae, reserve food is laminarin and manitol. In cyanophyceae reserve food is cyanophycean starch.
Correct Option: B
Reserve food in red algae (Rhodophyceae) is Floridean starch. In green algae, (Chlorophyceae), reserve food is starch. In brown algae, reserve food is laminarin and manitol. In cyanophyceae reserve food is cyanophycean starch.
- A research student collected certain alga and found that its cells contained both chlorophyll a and chlorophyll b as well as phycoerythrin.The alga belongs to
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In green algae, the photosynthetic pigments are chlorophyll a & b, carotenes and xanthophylls. In phaeophyceae, the pigments are chlorophyll a, chlorophyll c and carotenes and xanthophylls. Phycoerythrin gives red colour to Rhodophyceae.
Correct Option: A
In green algae, the photosynthetic pigments are chlorophyll a & b, carotenes and xanthophylls. In phaeophyceae, the pigments are chlorophyll a, chlorophyll c and carotenes and xanthophylls. Phycoerythrin gives red colour to Rhodophyceae.
- Columella is a specialised structure found in the sporangium of
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Ulothrix is a green alga. Spirogyra is a filamentous green alga. In Rhizopus the columella bears the spores for asexual reproduction.
Correct Option: B
Ulothrix is a green alga. Spirogyra is a filamentous green alga. In Rhizopus the columella bears the spores for asexual reproduction.
- In Ulothrix/Spirogyra, reduction division (meiosis) occurs at the time of
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Plant body of Ulothrix and Spirogyra is gametophyte (haploid), they produce zoogametes(n) which fuse to form zygospore (2n) diploid, which is a resting spore. Under favourable condition zygospore undergoes reductional division or meiosis to produce zoospores which give rise to new plant.
Correct Option: C
Plant body of Ulothrix and Spirogyra is gametophyte (haploid), they produce zoogametes(n) which fuse to form zygospore (2n) diploid, which is a resting spore. Under favourable condition zygospore undergoes reductional division or meiosis to produce zoospores which give rise to new plant.
- Chloroplast of Chlamydomonas is
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Shape and number of chloroplast in different members of algae is different
Chlamydomonas – cup shaped, 1/cell
Zygnema – Stellate, 2/cell
Spirogyra – Spiral, 1/ cell
Ulothrix – Collar shaped, 1/cellCorrect Option: B
Shape and number of chloroplast in different members of algae is different
Chlamydomonas – cup shaped, 1/cell
Zygnema – Stellate, 2/cell
Spirogyra – Spiral, 1/ cell
Ulothrix – Collar shaped, 1/cell
