Q. In the prothallus of a vascular cryptogam, the antherozoids and eggs mature at different times. As a result
A) there is high degree of sterility
B) one can conclude that the plant is apomictic
C) self-fertilization is prevented
D) there is no change in success rate of fertilization
Explanation
[Solution from source] When male and female gametes on the same prothallus mature at different times (dichogamy), the egg cannot be fertilised by antherozoids of the same prothallus, so self-fertilisation is prevented and cross-fertilisation is favoured. This does not cause sterility or apomixis. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.