What is the ratio of equational divisions that take place in Cycas and angiosperms respectively leading to the formation of male gametes from pollen grains?

Question:What is the ratio of equational divisions that take place in Cycas and angiosperms respectively leading to the formation of male gametes from pollen grains?

1.2 : 1

2.3 : 1

3.3 : 2

4.2 : 3


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