Which of the following animals is bisexual ?

Options

A. Ants
B. Cockroach
C. Leech
D. Wasps

Answer

**Step-by-Step Solution:**

1. **Understanding Bisexuality in Organisms:**
- Bisexuality in animals refers to organisms that possess both male and female reproductive systems. This means that a single individual can produce both male and female gametes.

2. **Identifying Key Terms:**
- The term "hermaphrodite" is often used to describe organisms that have both male and female reproductive organs. In such organisms, sexual dimorphism (the physical differences between males and females) is absent.

3. **Analyzing the Options:**
- The options provided are ants, cockroach, leech, and wasp. We need to determine which of these organisms is bisexual.

4. **Evaluating Each Option:**
- **Ants:** Ants are unisexual organisms, meaning they have distinct male and female individuals.
- **Cockroach:** Cockroaches are also unisexual, with separate male and female individuals.
- **Wasp:** Wasps are similarly unisexual, having distinct male and female forms.
- **Leech:** Leeches are known to be hermaphrodites, meaning they possess both male and female reproductive systems within a single individual.

5. **Understanding the Reproductive System of Leeches:**
- In leeches, the condition of having both male and female reproductive systems is often described as "protandry." This means that the male reproductive system develops before the female reproductive system in the same individual.

6. **Conclusion:**
- Based on the analysis, the only organism among the options that is bisexual is the leech.

**Final Answer:**
- The bisexual animal among the options is the **leech**.

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