During formation of an embryo sac in a typical angiosperm flower how many miosis and how many e sequential steps of mitosis are required respectively
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There is double fertilization and triple fusion that takes place in the embryo sac.
Explanation:
- The process by which the 'megaspore mother cell' converted into the megaspore is called the megasporogenesis. The 'megaspore mother cell' contains a nucleus and a dense cytoplasm.
- This megaspore mother cell produces four megaspores, under which only one 'megaspore is functional' and the other three remains degenerate. The nuclei of the functional megaspore divided mitotically into 2 nuclei and goes to the opposite ends.
- Another two mitotic cell divisions happens to form '4 nucleate' and '8 nucleate embryo sac'. After the completion of the '8 nucleate stage' , the cell walls are arranged and the female gametophyte formed.
To know more about embryo sac,
The odd one is [CBSE PMT 1991] A) Micropyle B) Embryo sac C ..
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