Select the wrong statement

Options

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

Answer

To solve the question "Select the wrong statement" regarding fungi and algae, we will analyze each statement provided in the context of sexual reproduction in these organisms.

### Step-by-Step Solution:

1. **Understand the Types of Gametes**:
- There are three types of gametes based on their morphology and behavior: isogamous (homogametes), anisogamous (different gametes), and oogamous (large female and small male gametes).

2. **Evaluate the First Statement**:
- The first statement claims that Chlamydomonas shows both isogamy and anisogamy.
- **Analysis**: This is correct as Chlamydomonas can reproduce sexually through both types of gametes.

3. **Evaluate the Second Statement**:
- The second statement mentions that Fucus shows oogamy.
- **Analysis**: This is also correct as Fucus, a brown alga, does exhibit oogamous reproduction.

4. **Evaluate the Third Statement**:
- The third statement discusses oomycetes, stating that the female gamete is smaller and motile while the male gamete is larger and non-motile.
- **Analysis**: This statement is incorrect. In oomycetes, the female gamete is actually larger and non-motile, while the male gamete is smaller and motile.

5. **Conclusion**:
- Based on the evaluations, the wrong statement is the fourth one regarding oomycetes. Therefore, the answer to the question is the fourth statement.

### Final Answer:
The wrong statement is: "In oomycetes, the female gamete is smaller and motile while the male gamete is larger and non-motile."

---