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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
Subtopic: Pheophyceae: Brown Algae |
66%
From NCERT
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In 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. | 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
Subtopic: Pheophyceae: Brown Algae |
83%
From NCERT
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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 |
91%
From NCERT
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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
Subtopic: Rhodophyceae: Red Algae and Importance of Algae |
82%
From NCERT
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All the following are members of rhodophyceae except:
| 1. | Polysiphonia | 2. | Laminaria |
| 3. | Gracilaria | 4. | Gelidium |
Subtopic: Rhodophyceae: Red Algae and Importance of Algae |
94%
From NCERT
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Consider the two statements:
| 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 |
Subtopic: Bryophytes |
81%
From NCERT
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Which of the following statement will not be true regarding bryophytes?
| 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. |
Subtopic: Bryophytes |
88%
From NCERT
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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 |
Subtopic: Bryophytes (Liverworts) |
68%
From NCERT
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In liverworts:
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: | 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
Subtopic: Bryophytes (Liverworts) |
70%
From NCERT
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Sporophyte is differentiated into a foot, a seta and a capsule in:
I. Liverworts
II. Mosses
I. Liverworts
II. Mosses
| 1. Only I | 2. Only II |
| 3. Both I and II | 4. Neither I nor II |
Subtopic: Bryophytes (Liverworts) |
59%
From NCERT
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