Zoochlorellae and zooxanthallae present in Hydra are
A
Symbionts in nutritive cells
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B
Symbionts in the gut
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C
Symbionts in endoblasts
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D
Organisms that provide hypnotoxin
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Solution
The correct option is A Symbionts in nutritive cells Zoochlorallae is a green algae and zooxanthalae is a brown algae that form symbiotic association with Hydra. This kind of interaction helps Hydra to survive in nutrition less environment as they are present in the nutritive cells.
So, the correct answer is 'Symbionts in nutritive cells'.