When male differs female in morphol-ohy, it is called

Options

A. heterogamy
B. homogamy
C. sexual dimorphism
D. hermaphroditism

Answer

**Step-by-Step Solution:**

1. **Understanding the Question:**
The question asks for the term used when male and female organisms differ in morphology.

2. **Identifying Key Terms:**
- Morphology refers to the form and structure of organisms.
- The terms heterogamy and homogamy are mentioned, which relate to the reproductive structures of flowering plants.

3. **Defining Heterogamy and Homogamy:**
- **Heterogamy:** This occurs when male and female reproductive organs mature at different times, preventing self-fertilization and promoting genetic variation.
- **Homogamy:** This occurs when male and female reproductive organs mature simultaneously, increasing the chances of self-fertilization.

4. **Clarifying the Terms Related to Organisms:**
- The question is not specifically about flowering plants but rather about the general difference between male and female organisms.

5. **Introducing the Concept of Sexual Dimorphism:**
- Sexual dimorphism refers to the differences in morphology between male and female individuals of the same species. This can include differences in size, shape, color, and other physical characteristics.

6. **Providing an Example:**
- A common example of sexual dimorphism is found in the roundworm Ascaris, where females are generally longer and have a curved tail compared to males.

7. **Concluding the Answer:**
- Therefore, when male and female differ in morphology, the correct term is **sexual dimorphism**.

**Final Answer:**
When male differs from female in morphology, it is called **sexual dimorphism**.

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