Select the wrong statement `:`

Options

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

Answer

To solve the question "Select the wrong statement," we need to analyze each of the provided statements regarding gametes in different organisms. Here’s the step-by-step breakdown:

### Step 1: Analyze the Statements
1. **Isogametes have similar structure, function, and behavior.**
- This statement is true. Isogametes are indeed similar in these aspects.

2. **Anisogametes differ either in structure, function, and behavior.**
- This statement is also true. Anisogametes are characterized by their differences in structure and function.

3. **In oomycetes, the female gamete is smaller and motile while the male gamete is larger and non-motile.**
- This statement is false. In oomycetes, the female gamete (egg) is larger and non-motile, while the male gamete (sperm) is smaller and motile.

4. **Chlamydomonas exhibits both isogamy and anisogamy.**
- This statement is true. Chlamydomonas can reproduce via both types of gametes.

5. **Fucus shows oogamy.**
- This statement is true. Fucus, a type of brown algae, exhibits oogamy.

### Step 2: Identify the Wrong Statement
From the analysis, the third statement about oomycetes is incorrect. Therefore, the wrong statement is:

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

### Final Answer
The correct option for the question is: **In oomycetes, female gamete is smaller and motile while the male gamete is larger and non-motile.**

---