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subdivision cycadicae

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body cell pollen grain

Subdivision Cycadicae
... Subdivision Cycadicae Subdivision Cycadicae The fossil history of the Cycads extends back 200 million years. The living species are ...
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Subdivision Cycadicae
Subdivision Cycadicae Development of Pollen Grain A stalk cell and body cell develop from the generative cell. As the body cell elongates, the pollen tube begins to develop. Two multiflagellated sperm develop from the body cell. Part of a developing ovule at the time of fertilization. Return to Main Menu Division Pinophyta
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