Assertion`:-` Connective tissue are mesodermal In origin.
Reason`:-` Nervous tissue is ectodermal in origin.

Options

A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.
B. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertiion.
C. If Assertion is True but the Reason is False.
D. If both Assertion & Reason are False

Explanation

To solve the assertion and reason question, we will analyze both statements step by step.

### Step 1: Analyze the Assertion
- The assertion states: "Connective tissues are mesodermal in origin."
- Connective tissues include various types such as adipose tissue, bone, cartilage, blood, and lymph.
- During embryonic development, there are three germ layers: ectoderm, mesoderm, and endoderm.
- Connective tissues derive from the mesoderm layer, which is the middle layer responsible for forming structures such as muscles, bones, and connective tissues.
- Therefore, the assertion is **true**.

### Step 2: Analyze the Reason
- The reason states: "Nervous tissue is ectodermal in origin."
- Nervous tissue is indeed formed from the ectoderm, which is the outermost germ layer.
- This tissue includes the brain, spinal cord, and nerves.
- Hence, the reason is also **true**.

### Step 3: Determine the Relationship Between Assertion and Reason
- Although both the assertion and reason are true, they are independent statements.
- The reason does not explain why connective tissue is mesodermal in origin; it simply states the origin of nervous tissue.
- Therefore, the reason is not the correct explanation for the assertion.

### Conclusion
- The correct answer is that both the assertion and reason are true, but the reason is not the correct explanation of the assertion. Thus, the answer is **Option B**.

---