Q. No.Identify the incorrect statement regarding algae:
| 1. | Algae contain chlorophyll |
| 2. | Algae are autotrophic |
| 3. | Body of an alga is composed of pseudoparenchyma and hyphae |
| 4. | Cell wall of an alga is composed of true cellulose. |
Subtopic: Pheophyceae: Brown Algae |
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Which of the following statements is true about zoospores and gametes in brown algae?
| 1. | Both zoospores and gametes in brown algae are motile and have equal sized flagella. |
| 2. | Zoospores are non-motile while gametes are motile, both lacking flagella. |
| 3. | Zoospores are motile with two flagella, while gametes are non-motile. |
| 4. | Zoospores and gametes are both motile and similar in the number of flagella. |
Subtopic: Pheophyceae: Brown Algae |
From NCERT
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All the following are example of green alga except:
1. Ectocarpus
2. Chara
3. Ulothrix
4. Spirogyra
1. Ectocarpus
2. Chara
3. Ulothrix
4. Spirogyra
Subtopic: Pheophyceae: Brown Algae | Chlorophyceae: Green Algae |
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Regarding the size and form of brown algae:
1. Both I and II are incorrect
2. Only I is incorrect
3. Only I is correct
4. Both I and II are correct
| I: | Ectocarpus is profusely branched and may reach a height of 100 meters. |
| II: | Kelps are simple branched filamentous brown algae. |
1. Both I and II are incorrect
2. Only I is incorrect
3. Only I is correct
4. Both I and II are correct
Subtopic: Pheophyceae: Brown Algae |
66%
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All the following will be correct for members of Phaeophyceae except:
| 1. | Chlorophyll a and Chlorophyll c are dominant photosynthetic pigments |
| 2. | Pyriform gametes |
| 3. | Floridean starch is the stored food |
| 4. | 2 unequal and lateral flagellar insertions |
Subtopic: Pheophyceae: Brown Algae |
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The members of phaeophyceae or brown algae;
| 1. | are found primarily in fresh water habitats. |
| 2. | possess chlorophyll a, c, carotenoids and xanthophylls. |
| 3. | store food as glycogen. |
| 4. | do not reproduce asexually. |
Subtopic: Pheophyceae: Brown Algae |
87%
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Identify the algal group:
1. Green algae
2. Brown algae
3. Red algae
4. Blue-green algae
| I: | They possess chlorophyll a, c, carotenoids and xanthophylls. |
| II: | Food is stored as complex carbohydrates, which may be in the form of laminarin or mannitol. |
2. Brown algae
3. Red algae
4. Blue-green algae
Subtopic: Pheophyceae: Brown Algae |
91%
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A root like holdfast, a stem like stipe and a leaf like frond constitutes the plant body in case of
| 1. | Rhodophyceae | 2. | Chlorophyceae |
| 3. | Phaeophyceae | 4. | Ferns |
Subtopic: Pheophyceae: Brown Algae |
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The leaf like photosynthetic organ in the body of a typical brown alga is called as:
| 1. | Frond | 2. | Stipe |
| 3. | Holdfast | 4. | Rhizoid |
Subtopic: Pheophyceae: Brown Algae |
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Biflagellate zoospores that are pear-shaped and have two unequal laterally attached flagella are involved in:
| 1. | Asexual reproduction in brown algae |
| 2. | Asexual reproduction in red algae |
| 3. | Sexual reproduction in brown algae |
| 4. | Sexual reproduction in red algae |
Subtopic: Pheophyceae: Brown Algae |
71%
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