Q. No.Regarding the size and form of brown algae:
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
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1. Major pigments are chlorophyll a, c, fucoxanthin
2. Food is stored as complex carbohydrates which may be in the form of Laminarin or Mannitol
3. Vegetative cells have chitinous wall usually covered on the outside by a gelatinous coating of algin
4. Flagellar number and insertions are 2, unequal and lateral
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| I. | Asexual reproduction is by biflagellate zoospores that are pear shaped and have two unequal and laterally attached flagella. |
| II. | The gametes are pyriform [pear shaped] and bear two laterally attached flagella. |
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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| 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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