Fusion of two gametes dissimilar in size, as in species of Eudorina is termed as______.
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Correct answer: A
Explanation
The correct answer is option 1 i.e. anisogamous.
The fusion of two gametes dissimilar in size, as in species of Eudorina, is termed "anisogamy."
Anisogamy is a type of sexual reproduction where the gametes (sperm and egg) differ in size.
In contrast, isogamy refers to sexual reproduction where the gametes are of the same size and shape.
Eudorina is a genus of colonial green algae where anisogamy is observed.