Plant Diversity.pdf
Plant Diversity.pdf
Plant Diversity.pdf
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Pollination:<br />
The movement of pollen from the<br />
anther to the stigma<br />
Pollen grain contains two nuclei:<br />
tube nucleus<br />
generative nucleus<br />
Tube nucleus begins formation of<br />
pollen tube - extends into style<br />
Generative nucleus follows and<br />
divides to form two sperm<br />
nuclei - pollen now considered<br />
mature gametophyte<br />
Tube nucleus enters embryo sac<br />
at micropyle<br />
Sperm nuclei follow
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