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Q. No.Heterospory in pteridophytes is an evolutionary advancement. Which statement regarding heterospory is INCORRECT?
1. Heterosporous pteridophytes produce two types of spores - microspores and megaspores
2. Selaginella and Salvinia are examples of heterosporous pteridophytes
3. Heterospory leads to development of separate male and female gametophytes
4. All pteridophytes including Lycopodium and Equisetum exhibit heterospory
1. Heterosporous pteridophytes produce two types of spores - microspores and megaspores
2. Selaginella and Salvinia are examples of heterosporous pteridophytes
3. Heterospory leads to development of separate male and female gametophytes
4. All pteridophytes including Lycopodium and Equisetum exhibit heterospory
Subtopic: Pteridophytes |
83%
Level 1: 80%+
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Pteridophytes differ from bryophytes mainly in:
| 1. | Possessing gametophytes with vascular tissues |
| 2. | Appearing only in submerged aquatic habitats |
| 3. | Producing zygotes which disperse actively |
| 4. | Having a dominant sporophyte independent of gametophyte |
Subtopic: Pteridophytes |
63%
Level 2: 60%+
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Which structure enables pteridophytes to be classified as vascular cryptogams?
| 1. | Presence of seeds |
| 2. | Presence of archegonia |
| 3. | Presence of xylem and phloem |
| 4. | Dominant gametophyte |
Subtopic: Pteridophytes |
89%
Level 1: 80%+
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