- 1(current)
Q. No.| Assertion(A): | The precursor to seed habit is seen in heterosporous ferns |
| Reason(R): | The female gametophyte is retained for variable periods in heterosporous ferns |
| 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 False |
Subtopic: Â Pteridophytes: Heterospory |
 75%
Level 2: 60%+
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From an evolutionary point of view, retention of the female gametophyte with developing young embryo on the parent sporophyte for some time, is first observed in:
| 1. | Gymnosperms | 2. | Liverworts |
| 3. | Mosses | 4. | Pteridophytes |
Subtopic: Â Pteridophytes: Heterospory |Â Pteridophytes |
 75%
Level 2: 60%+
NEET - 2019
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Genera like Selaginella and Salvinia produce two kinds of spores. Such plants are known as
| 1. | Homosporous | 2. | Heterosporous |
| 3. | Homosorus | 4. | Heterosorus |
Subtopic: Â Pteridophytes: Heterospory |
 93%
Level 1: 80%+
NEET - 2021
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- 1(current)
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