Assertion :- Placenta is connected to the foetus by an umbilical cord.
Reason :- Foetal components of the placenta are derived from the chondroblast.

Options

A. If both Assertion and Reason are true and the Reason is a correct explanation of the Assertion .
B. If both Assertion and Reason are true but Reason is not correct explanation of the Assertion .
C. If Assertion is true but the Reason is false .
D. If Both Assertion and Reason Are false

Answer

### Step-by-Step Solution:

1. **Understanding the Assertion**: The assertion states that the placenta is connected to the fetus by an umbilical cord. This is a true statement. The umbilical cord serves as a vital link between the mother and the fetus, facilitating the exchange of nutrients, gases, and waste products.

2. **Understanding the Reason**: The reason provided claims that the fetal components of the placenta are derived from chondroblast. This statement is incorrect. Chondroblasts are cells that produce cartilage, and they do not contribute to the formation of the placenta. The fetal components of the placenta are actually derived from trophoblasts, which are cells that form the outer layer of the blastocyst.

3. **Evaluating the Relationship**: The assertion is true, while the reason is false. Therefore, the correct interpretation of the relationship between the assertion and reason is that the assertion stands alone as a true statement, but the reason does not support it.

4. **Conclusion**: Based on the evaluation, the correct answer is that the assertion is true, but the reason is false.

### Final Answer:
- The assertion is true, and the reason is false.

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