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1.Sexual Reproduction in Flowering Plants
normal
Male gametes in angiosperms are formed by the division of
A
generative cell
B
vegetative cell
C
microspore mother cell
D
microspore.
(AIPMT-2007)
Solution
(a) : In the pollen sac (microsporangium) of the anther, haploid microspores are formed by mitosis. Mitosis then follows to produce a two celled pollen grain with a small generative cell and a large vegetative cell. This generative cell will undergo further mitosis to form two male gametes (nuclei). The pollen tube grows through a spore in the pollen grain, with the tube (vegetative) nucleus at its tips and the male nuclei behind.
Standard 12
Biology