1. | A male and female gametophyte having independent free-living existence. |
2. | Coralloid roots associated with symbiotic nitrogen-fixing cyanobacteria |
3. | Ovules not enclosed by any ovary wall and remain exposed, before and after fertilisation |
4. | Presence of male and female cones or strobili on the same plant |
1. | Presence of archegonia |
2. | Well-developed vascular tissues |
3. | Independent gametophyte |
4. | Independent sporophyte |
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. |
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. |
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. |
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. |