What is not true regarding bryophytes?
| 1. | Zygote undergoes reduction division immediately |
| 2. | Sporophyte is not free living |
| 3. | Haploid spores are produced by meiosis |
| 4. | The sex organs are multi-cellular |
| Assertion (A): | Bryophytes have not been very successful on land. |
| Reason (R): | The gametophyte is the dominant stage in the alternation of generation in Bryophytes. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | Both (A) and (R) are True and (R) does not correctly explain (A). |
| 3. | (A) is True; (R) is False |
| 4. | Both (A) and (R) are False |
What is the function of the gemmae produced by some liverworts?
1. a water gathering structure
2. a light gathering structure
3. a sexual structure
4. an asexual structure
| I: | A is the gametophyte and B is the sporophyte. |
| II: | The ploidy of cells in A will be haploid and the ploidy of cells in B will be diploid. |
| Statement I: | The sex organ in bryophytes are multicellular |
| Statement II: | Archegonium produces a single egg |
| 1. | Statement I is correct; Statement II is correct |
| 2. | Statement I is correct; Statement II is incorrect |
| 3. | Statement I is incorrect; Statement II is correct |
| 4. | Statement I is incorrect; Statement II is incorrect |
| Column-I | Column-II | ||
| A. | Angiosperms | P. | Produce seeds in cones |
| B. | Gymnosperms | Q. | Produce spores on the underside of fronds |
| C. | Ferns | R. | Seeds develop inside an ovary, which matures into a fruit |
| D. | Mosses | S. | Spores develop in capsule at the end of a stalk |
| A | B | C | D | |
| 1. | P | R | Q | S |
| 2. | P | R | S | Q |
| 3. | R | P | Q | S |
| 4. | R | P | S | Q |
| I: | The male gametophyte of Marchantia |
| II: | Hair like multicellular, branched true roots on the margins of the plant body. |
| III: | Sexual reproductive cup like structures on the dorsal surface of the plant. |
| 1. | In the Protonema. | 2. | In the Sporangium. |
| 3. | In the Antheridium. | 4. | In the Archegonium. |
| 1. | They reproduce only asexually |
| 2. | They are vascular cryptogams |
| 3. | They have a dominant gametophyte |
| 4. | They require water for fertilisation |
A plant shows thallus level of organization. It shows rhizoids and is haploid. It needs water to complete its life cycle because the male gametes are motile. Identify the group to which it belongs to.
| 1. | Pteridophytes | 2. | Gymnosperms |
| 3. | Monocots | 4. | Bryophytes |