NEET · Biology · STD 11 - 3. Plant kingdom

Select the wrong statement.

A In Oomycetes, female gamete is smaller and motile, while male gamete is larger and non motile.
B Chlamydomonas exhibits both isogamy and anisogamy and Fucus shows oogamy.
C Isogametes are similar in structure, function and behaviour.
D Anisogametes differ either in structure, function or behaviour.

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Answer & Solution

Correct Answer

(A) In Oomycetes, female gamete is smaller and motile, while male gamete is larger and non motile.

Step-by-step Solution

Detailed explanation

(a) : In oomycetes, like other oogamous organisms female gamete is large and non motile, while male gamete is small and motile.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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