Assertion : In Cocos nucifera coconut water represents the cellular endosperm and the surrounding white kernel represents the free-nuclear endosperm.
Reason : Endosperm is always completely consumed by developing embryo before seed maturation.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion
B. If both assertion and reason are true but reason is not the correct explanation of assertion
C. If assertion is true but reason is false
D. If both assertion and reason are false

Explanation

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that in Cocos nucifera (coconut), the coconut water represents the cellular endosperm, while the surrounding white kernel represents the free-nuclear endosperm.
- This is incorrect. In reality, the coconut water is the liquid endosperm, which is a form of free-nuclear endosperm, and the white kernel is the solid endosperm, which is cellular.

2. **Understanding the Reason**:
- The reason given states that the endosperm is always completely consumed by the developing embryo before seed maturation.
- This statement is also incorrect. While in some plants (like pea, groundnut, and beans), the endosperm is consumed by the embryo before seed maturation, in other plants (like coconut and castor), the endosperm persists in the mature seed and is used during germination.

3. **Conclusion**:
- Both the assertion and the reason are false. Therefore, the correct answer is that both the assertion and reason are incorrect.

### Final Answer:
Both the assertion and reason are false.