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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 56

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54. of rounded sacs, containing at the bottom, the enlarged, naked mass of the protoplasm - the oosphere, and having a narrow neck which leads up from this and forms the opening of the archegonium: through this the spermatozoids enter and fertilize the cell. This gives rise to the asexual phase of the plant - resulting in a mass of spores which produce in turn the sexual
 
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