| 1. | Auxospore production is almost always linked to meiosis and sexual reproduction.
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| 2. | In diatoms, fertilization gives rise to a zygote termed auxospore.
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| 3. | Inside the auxospore, a large initial cell is produced.
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| 4. | The zygote is then becomes an auxospore, which has no rigid frustule.
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| 5. | The zygote sheds its silica theca and grows into a large sphere covered by an organic membrane, the auxospore.
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| 6. | A new diatom cell of maximum size, the initial cell, forms within the auxospore thus beginning a new generation.
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| 7. | When a minimum average size is reached auxospore formation occurs and sexual reproduction restores the population's average cell size.
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| 8. | Once such cells reach a certain minimum size, rather than simply divide, they reverse this decline by forming an auxospore.
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| 9. | These fuse to produce a zygote which expands in size to develop into an auxospore from which full-sized vegetative cells are produced.
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| 10. | In terms of cell cycle, binucleate ) zygote that develops into an auxospore ( from which full-sized vegetative cells are produced ).
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