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Q. No.Assertion(A): The main plant body of the bryophyte is haploid which possesses true roots, leaf-like and stem-like structures.
Reason(R): This main plant body produces gametes and it is known as gametophyte.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Bryophytes |
74%
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Assertion(A): Mosses are of great ecological importance.
Reason(R): Mosses are among the first organisms to colonize the rocks.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason(R): Mosses are among the first organisms to colonize the rocks.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Bryophytes |
75%
From NCERT
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Assertion(A): Species of Sphagnum have good capacity to hold water.
Reason(R): They have been used as packing material for trans-shipment of living material.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason(R): They have been used as packing material for trans-shipment of living material.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Bryophytes |
From NCERT
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Assertion(A): The members of Rhodophyceae are commonly called red algae.
Reason(R): Red algae have the predominance of the red pigment, r-phycocyanin in their body.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason(R): Red algae have the predominance of the red pigment, r-phycocyanin in their body.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Rhodophyceae: Red Algae and Importance of Algae |
From NCERT
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Assertion(A): Bryophytes are also called amphibians of the plant kingdom.
Reason(R): These plants can live in soil but are dependent on water for asexual reproduction.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason(R): These plants can live in soil but are dependent on water for asexual reproduction.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Bryophytes |
72%
From NCERT
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Assertion(A): The spread of living pteridophytes is limited and restricted to narrow geographical regions.
Reason(R): Gametophytic plant bodies in pteridophytes need sandy soil to sustain till maturity.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason(R): Gametophytic plant bodies in pteridophytes need sandy soil to sustain till maturity.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Pteridophytes |
66%
From NCERT
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Assertion(A): Earliest systems of classification separated the closely related species.
Reason(R): Such systems were based on phylogenetic characters.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason(R): Such systems were based on phylogenetic characters.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Classification System |
77%
From NCERT
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Assertion(A): Mosses reduce the impact of falling rain and prevent soil erosion.
Reason(R): Lichens form a dense mat on the soil.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason(R): Lichens form a dense mat on the soil.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Bryophytes |
56%
From NCERT
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Assertion(A): Gymnosperms are called naked-seeded plants.
Reason(R): The seeds remain exposed after their fertilization.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason(R): The seeds remain exposed after their fertilization.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Gymnosperms |
From NCERT
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Match the columns:
1. A = (iii), B = (iv), C = (i), D = (ii)
2. A = (iii), B = (ii), C = (i), D = (iv)
3. A = (iv), B = (i), C = (ii), D = (iii)
4. A = (iv), B = (ii), C = (i), D = (iii)
| Column-I | Column-II | ||
| A. | Cedar wood oil | (i) | Pinus geradiana |
| B. | Ephedrine | (ii) | Cycas revoluta |
| C. | Chilgoza | (iii) | Juniperus |
| D. | Sago | (iv) | Ephedra |
1. A = (iii), B = (iv), C = (i), D = (ii)
2. A = (iii), B = (ii), C = (i), D = (iv)
3. A = (iv), B = (i), C = (ii), D = (iii)
4. A = (iv), B = (ii), C = (i), D = (iii)
Subtopic: Examples of Gymnosperms |
69%
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