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The fertilizing cell, its varying form and behavior by Nelly Peery, 1890

The fertilizing cell, its varying form and behavior by Nelly Peery, 1890, Page 50

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48. mingle with the protoplasm of the oosphere, and are lost. Now a hard, thick dark colored wall is formed about the oosphere. This breaks off from the parent plant and falls to the bottom of the water, where it "rests" for a time. In Marchantia the sexual reproduction is the same: the organs are an antheridium, bearing spermatozoids, and an archegonium, within
 
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