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Q. No.Asexual reproduction in brown algae is by:
1.
biflagellate biconcave disc shaped zoospores
2.
non-motile spherical aplanogametes
3.
biflagellate pear shaped zoospores
4.
non-motile zoospores produced in zoosporangia
Subtopic: Pheophyceae: Brown Algae |
89%
From NCERT
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Consider the two statements:
| Statement I: | Antheridium in bryophytes produces biflagellate antherozoids. |
| Statement II: | Archegonium in bryophytes produces a single egg. |
| 1. | Statement I is correct; Statement II is incorrect |
| 2. | Statement I is correct; Statement II is correct |
| 3. | Statement II is correct; Statement I is incorrect |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Bryophytes |
89%
From NCERT
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Classification system based on information like chromosome number, structure, behaviour is called as:
1. Numerical taxonomy
2. Cytotaxonomy
3. Chemotaxonomy
4. Cladistics
1. Numerical taxonomy
2. Cytotaxonomy
3. Chemotaxonomy
4. Cladistics
Subtopic: Classification System |
87%
From NCERT
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Regarding red algae:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | Majority are fresh water with greater concentrations found in the colder areas. |
| II: | They occur in both well-lighted regions close to the surface of water and also at great depths in oceans where relatively little light penetrates. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Rhodophyceae: Red Algae and Importance of Algae |
81%
From NCERT
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The leafy stage in the life cycle of mosses:
| 1. | is a stage of the sporophytic generation. |
| 2. | is a creeping, green, branched and frequently filamentous stage. |
| 3. | develops directly from a spore. |
| 4. | bears sex organs. |
Subtopic: Bryophytes |
53%
From NCERT
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Consider the two given statements:
| Assertion (A): | The spread of living pteridophytes is limited and restricted to narrow geographical regions. |
| Reason (R): | Pteridophytes are terrestrial plants that possess vascular tissues – xylem and phloem. |
| 1. | Both (A) and (R) are True and the (R) correctly explains (A) |
| 2. | (A) is True but (R) is False |
| 3. | (A) is False but (R) is True |
| 4. | Both (A) and (R) are True but (R) does not correctly explain (A) |
Subtopic: Pteridophytes |
81%
From NCERT
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Fucoxanthin is an important pigment in:
1. Red algae
2. Blue-green algae
3. Green algae
4. Brown algae
1. Red algae
2. Blue-green algae
3. Green algae
4. Brown algae
Subtopic: Pheophyceae: Brown Algae |
87%
From NCERT
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Life cycles of Polysiphonia and Fucus respectively are:
1. Diplontic, Haplodiplontic
2. Haplodiplontic, Diplontic
3. Haplodiplontic, Haplontic
4. Haplontic, Diplontic
1. Diplontic, Haplodiplontic
2. Haplodiplontic, Diplontic
3. Haplodiplontic, Haplontic
4. Haplontic, Diplontic
Subtopic: Life Cycle Patterns in Plants (OLD NCERT) |
83%
From NCERT
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Which of the following statement is correct?
| 1. | Ovules are enclosed by ovary wall in gymnosperms |
| 2. | Selaginella is heterosporous, while Salvinia is homosporous |
| 3. | Pteridophytes are the first terrestrial plants to possess xylem and phloem. |
| 4. | Stems are usually unbranched in both Cycas and Pinus |
Subtopic: Pteridophytes |
89%
From NCERT
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Give below are two statements : One is labelled as Assertion (A) and the other is labelled Reason (R) :
In the light of the above statements, choose the most appropriate answer from the options given below:
| Assertion (A): | The first stage of gametophyte in the life cycle of moss is protonema stage. |
| Reason (R): | Protonema develops directly from spores produced in capsule. |
| 1. | (A) is False but (R) is True. |
| 2. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 3. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 4. | (A) is True but (R) is False. |
Subtopic: Bryophytes |
67%
From NCERT
NEET - 2023
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