Mark the structure which facilitates entry of oxygen and water in to the seed during germination

Options

A. sprophytic budding
B. apogamy
C. apospory
D. diplospory

Answer

To answer the question regarding the structure that facilitates the entry of oxygen and water into the seed during germination, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Seed Structure**:
- A seed consists of two main parts: the outer seed coat and the embryo (which includes the embryo sac).

2. **Identifying the Key Opening**:
- Within the seed, there is a specific opening that plays a crucial role during the germination process. This opening is known as the micropyle.

3. **Function of the Micropyle**:
- The micropyle is a small pore that allows the entry of essential substances such as water and oxygen into the seed. These elements are vital for the metabolic processes that kickstart germination.

4. **Conclusion**:
- Therefore, the structure that facilitates the entry of oxygen and water into the seed during germination is the micropyle.

### Final Answer:
The structure that facilitates the entry of oxygen and water into the seed during germination is the **micropyle**.

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