Sexual reproduction in Spirogyra is an advanced feature because it...

Sexual reproduction in Spirogyra is an advanced feature because it shows:

Options

Adifferent sizes of motile sex organs
Bsame size of motile sex organs
Cmorphologically different sex organs
Dphysiologically differentiated sex organs

Correct answer

D. physiologically differentiated sex organs

Step-by-step solution

In Spirogyra, the sexual reproduction involves the fusion of two morphologically identical isogametes and physiologically dissimilar anisogametes. This is a case of primitive anisogamy.

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