Q. No.The leaf like photosynthetic organ in the body of a typical brown alga is called as:
1.
Frond
2.
Stipe
3.
Holdfast
4.
Rhizoid
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Which of the following statements would be true for brown algae?
| 1. | Major pigments are chlorophyll a, c and fucoxanthin. |
| 2. | Food is stored as floridean starch. |
| 3. | Vegetative cells have wall made of cellulose, pectin and polysulphate esters. |
| 4. | Flagellar number and insertions are 2, equal and apical. |
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Sexual reproduction is oogamous and accompanied by complete post-fertilization developments in the members of:
1. Chlorophyceae
2. Phaeophyceae
3. Rhodophyceae
4. Both Chlorophyceae and Phaeophyceae
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| 1. | Polysiphonia | 2. | Laminaria |
| 3. | Gracilaria | 4. | Gelidium |
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| 1. | Red algae | 2. | Green algae |
| 3. | Brown algae | 4. | Blue green algae |
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| Statement I: | Bryophytes usually occur in damp, humid and shaded localities and are not truly ‘successful’ on land. |
| Statement II: | They are dependent on water for sexual reproduction. |
| 1. | Statement I is correct and Statement II is incorrect |
| 2. | Both Statement I and Statement II are correct and Statement II explains Statement I |
| 3. | Statement I is incorrect and Statement II is correct |
| 4. | Both Statement I and Statement II are correct but Statement II does not explain Statement I |
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| 1. | They are dependent on water for sexual reproduction. |
| 2. | Archegonium is flask shaped and produces multiple eggs. |
| 3. | Sporophyte is attached to the photosynthetic gametophytes and derives nourishment from it. |
| 4. | The antherozoids are released into water. |
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Regarding Marchantia:
| I: | The thallus is dorsi-ventral and closely appressed to the substrate. |
| II: | The plant is monoecious. |
| 1. | Both I and II are incorrect |
| 2. | Only I is incorrect |
| 3. | Only I is correct |
| 4. | Both I and II are correct |
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| I: | Asexual reproduction is not seen. |
| II: | Sexual reproduction takes place by multicellular gemmae. |
1. Both I and II are incorrect
2. Only I is incorrect
3. Only I is correct
4. Both I and II are correct
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