- 1(current)
Q. No.Selaginella and Salvinia are considered to represent a significant step towards the evolution of seed habit because:
| 1. | Embryo develops in female gametophyte which is retained on parent sporophyte. |
| 2. | Female gametophyte is free and gets dispersed like seeds. |
| 3. | Female gametophyte lacks archegonia. |
| 4. | Megaspores possess endosperm and embryo surrounded by a seed coat. |
Subtopic: Â Pteridophytes |
 85%
Level 1: 80%+
AIPMT - 2011
Hints
Examine the figures A, B, C and D. In which one of the four options all the items, A, B, C and D are correct?
Options :
| A | B | C | D | |
| 1. | Equisetum | Ginkgo | Selaginella | Lycopodium |
| 2. | Selaginella | Equisetum | Salvinia | Ginkgo |
| 3. | Funaria | Adiantum | Salvinia | Riccia |
| 4. | Chara | Marchantia | Fucus | Pinus |
Subtopic: Â Pteridophytes |Â Gymnosperms |
 92%
Level 1: 80%+
AIPMT - 2010
Hints
Which one of the following is a vascular cryptogam?
| 1. | Equisetum | 2. | Ginkgo |
| 3. | Marchantia | 4. | Cedrus |
Subtopic: Â Classification of Pteridophytes: I |Â Classification of Pteridophytes: II |Â Pteridophytes |Â Classification of Pteridophytes |
 63%
Level 2: 60%+
AIPMT - 2009
Hints
Subtopic: Â Pteridophytes: Heterospory |Â Pteridophytes |
 92%
Level 1: 80%+
AIPMT - 2008
Hints
Links
In the prothallus of a vascular cryptogam, the antherozoids and eggs mature at different times. As a result:
| 1. | there is no change in the success rate of fertilization |
| 2. | there is a high degree of sterility |
| 3. | one can conclude that the plant is apomictic |
| 4. | self-fertilization is prevented |
Subtopic: Â Pteridophytes: Heterospory |Â Pteridophytes |
 71%
Level 2: 60%+
AIPMT - 2007
Hints
- 1(current)
Q. No.
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