The rejuvenescent spore of a diatom is:

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(D) Diatoms have a rigid cell wall made of silica,which restricts their growth. When a diatom reaches a minimum size due to repeated cell divisions,it

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Diploid and auxospore

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(D) Diatoms have a rigid cell wall made of silica,which restricts their growth. When a diatom reaches a minimum size due to repeated cell divisions,it undergoes sexual reproduction to form a specialized cell called an auxospore. The auxospore is diploid and serves to restore the original size of the diatom cell. Therefore,the rejuvenescent spore of a diatom is diploid and an auxospore.

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