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Q. No.Classification system based on information like chromosome number, structure, behaviour is called as:
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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Identify the pair of heterosporous pteridophytes among the following :
1. Equisetum and Salvinia
2. Lycopodium and Selaginella
3. Selaginella and Salvinia
4. Psilotum and Salvinia
1. Equisetum and Salvinia
2. Lycopodium and Selaginella
3. Selaginella and Salvinia
4. Psilotum and Salvinia
Subtopic: Pteridophytes |
86%
From NCERT
NEET - 2023
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Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R):
In the light of the above statements, choose the correct answer from the options given below:
| Assertion (A): | In gymnosperms, the pollen grains are released from the microsporangium and carried by air currents. |
| Reason (R): | Air currents carry the pollen grains to the mouth of the archegonia where the male gametes are discharged and pollen tube is not formed. |
| 1. | (A) is False, (R) is True. |
| 2. | Both (A) and (R) are True and (R) correctly explains (A). |
| 3. | Both (A) and (R) are True and (R) does not correctly explain (A). |
| 4. | (A) is True, (R) is False. |
Subtopic: Gymnosperms |
64%
From NCERT
NEET - 2023
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