In cyanophyceae, flagella are:

PResent in zoospores only

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Present

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Present in gamete stage only

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Absent

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Solution

The correct option is A PResent in zoospores only
Cyanophyceae are photosynthetic bacteria found in fresh water and salt water. They have phycobilins and chlorophyll - a which were once thought to be algae. In Cyanophyceae, flagella are completely absent in vegetative and reproductive structures.
So, the correct answer is 'Absent'.

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