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Question:

Which of the following is wrong statement?

Chlamydomonas exhibits both isogamy and anisogamy and Fucus shows oogamy.

Isogametes are similar in structure, function and behavior.

In oomycetes female gamete is smaller and motile, while male gamete is larger and non-motile.

Anisogametes differ either in structure, function or behavior.

Solution:

Oomycota includes water molds and downy mildews. They are filamentous protists that absorb their food from the surrounding water or soil. Female gametes are larger in size and non-motile whereas the male gametes are small in size showing motility. So, the correct answer is option C.