Spirogyra exhibit a phenomenon similar to sexual reproduction seen in protozoans. It is termed as -

Binary Fission

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Multiple fission

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Fragmentation

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Conjugation

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Solution

The correct option is D
Conjugation

After repeated rounds of asexual reproduction, in order to regain the lost vigour of genetic material, certain filamentous forms of algae such as Spirogyra exchange genetic material in a process very similar to sexual reproduction seen in protozoans called conjugation. Two filamentous algae lie close to each other and a conjugation tube is formed between the two filaments that helps in exchange of genetic material.

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In Spirogyra, asexual reproduction takes place by ___.

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