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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
Subtopic: Pheophyceae: Brown Algae |
91%
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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%
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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%
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All the following bryophytes are ‘Mosses’ except:
| 1. | Funaria | 2. | Marchantia |
| 3. | Polytrichum | 4. | Sphagnum |
Subtopic: Bryophytes (Anthoceropsida) |
85%
From NCERT
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Consider the given statements regarding Mosses:
1. Only I, II and III are correct
2. Only I, III and IV are correct
3. Only II, III and IV are correct
4. I, II, III and IV are correct
| I: | Protonema is a gametophyte stage that is creeping, green, branched and frequently filamentous. |
| II: | Leafy stage bears sex organs and is attached to the soil through multicellular and branched rhizoids. |
| III: | Sex organs are produced at the apex of the leafy shoot. |
| IV: | They have an elaborate mechanism of spore dispersal. |
1. Only I, II and III are correct
2. Only I, III and IV are correct
3. Only II, III and IV are correct
4. I, II, III and IV are correct
Subtopic: Bryophytes (Anthoceropsida) |
82%
From NCERT
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