Auxospores and hormocysts are formed respectively, by -

Some cyanobacteria and many diatoms

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Several diatoms and a few cyanobacteria

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Several cyanobacteria and several diatoms

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Some diatoms and several cyanobacteria

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Solution

The correct option is B Several diatoms and a few cyanobacteria
The reproductive cell are diatoms which result from the union of two smaller cells is called as Auxospores. These are formed in certain species of diatoms. On the other hand, few cyanobacteria have specialized structures called form cysts which helps in reproduction.

The correct answer is B.

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