Embryo sac is to ovule as_________is to an anther.

Options

A. stamen
B. filament
C. pollen grain
D. androecium

Answer

To solve the analogy "Embryo sac is to ovule as ______ is to an anther," we need to understand the relationship between the terms involved.

1. **Understanding the Terms**:
- The **embryo sac** is the female gametophyte found within the **ovule** of flowering plants.
- The **ovule** is located within the **ovary** of the carpel.
- The **anther** is part of the stamen, which is the male reproductive structure in flowering plants.

2. **Identifying the Corresponding Structure**:
- Just as the embryo sac is the female gametophyte located within the ovule, we need to find the male gametophyte that is associated with the anther.
- The **pollen grain** is the male gametophyte that develops within the **anther**.

3. **Establishing the Analogy**:
- Therefore, we can conclude that the relationship is:
- Embryo sac (female gametophyte) is to ovule as pollen grain (male gametophyte) is to anther.

4. **Final Answer**:
- The answer to the analogy is: **Pollen grain**.