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Which one of the following shows isogamy with non-flagellated gametes?
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- Sargassum
- Ectocarpus
- Ulothrix
- Spirogyra
- Sargassum
Correct Option: D
In Spirogyra, sexual reproduction occurs through conjugation. Gametes are non-flagellated, morphologically similar. But physiologically different (isogamy with physiological anisogamy).