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Home Q & A Board Biology-Related Homework Help Zoology and Botany (Moderator: ehd123)
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fireman fireman
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11 years ago
In angiosperms, the male gametophyte consists of ______

A. two sperm cells
B. a pollen grain
C. a single stamen
D. an anther
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wrote...
#1
11 years ago
A. Since it is a male gametophyte it produce male gametes, that is two sperm cells which are haploid and they undergo fertilization to produce a diploid zygote and a triploid primary endosperm nucleus (PEN) that develops into endosperm..
wrote...
#2
11 years ago
B. a pollen grain
In angiosperm the pollen is the miniature but mature male gametophyte.  This pollen is the entire gametophyte stage in the life cycle of an angiosperm. Pollen consists of  a vegetative cell and  a generative cell with two nuclei: one to form a pollen tube and one to produce the sperm nuclei to be delivered by the tube for fertilization of an ova.
http://www.eplantscience.com/index_files/pollen.php
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