A) When pollen is shed at two-celled stage, double fertilization does not take place
B) Vegetative cell is larger than generative cell
C) Pollen grains in some plants remain viable for months
D) In tine is made up of cellulose and pectin
Correct Answer: A
Solution :
Before pollination the protoplast of pollen grain divides into two unequal cells small generative cell and large tube or vegetative cell. In some species the generative cell divides into two male gametes prior to dehiscence of pollen grain. Therefore at the time of pollination the pollen grain is either 2-celled or 3-celled.
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