In flowering plants, a mature male gametophyte is derived from a pollen mother

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In flowering plants, a mature male gametophyte is derived from a pollen mother cell by

Options

(a) two mitotic divisions
(b) one meiotic and two mitotic divisions
(c) three mitotic divisions
(d) a singe meiotic division

Correct Answer:

one meiotic and two mitotic divisions

Explanation:

Each pollen mother cell, by a meiotic division, gives rise to a group of four haploid microspores. During gametogenesis (mitosis) the pollen nucleus divides to form a generative cell and a vegetative cell. The former undergoes another mitosis to form two sperms (the male gametes).

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Topics: Reproduction In Organisms and Plants (129)
Subject: Biology (4253)

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