Assertion: Fusiform cells are elongated and tapering cells.
Reason: These cells form axial system consisting of vascular rays.

Options

A. (a) If both Assertion and Reason are true and the Reason is the correct explanatin of the Assertion.
B. (b) If both Assertion and Reason are true, but the Reason is not the correct explanation of the Assertion.
C. (c) If Assertion is true, Reason is false.
D. (d) If both Assertion and Reason are true.

Answer

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

### Step 1: Analyze the Assertion
The assertion states that "Fusiform cells are elongated and tapering cells."
- **Explanation**: Fusiform cells are indeed elongated and tapering in shape. They are a type of cell found in the vascular cambium of plants and are responsible for the production of xylem and phloem tissues. This statement is true.

### Step 2: Analyze the Reason
The reason states that "These cells form an axial system consisting of vascular rays."
- **Explanation**: This statement is incorrect when attributed to fusiform cells. The axial system consisting of vascular rays is actually formed by ray initials, not fusiform cells. Fusiform cells are arranged vertically and contribute to the formation of vascular tissues, while vascular rays (which are horizontal) are formed by ray initials. Therefore, this statement is false.

### Step 3: Conclusion
- The assertion is true: Fusiform cells are elongated and tapering cells.
- The reason is false: Fusiform cells do not form the axial system consisting of vascular rays; that is the role of ray initials.

### Final Answer
Since the assertion is true and the reason is false, the correct answer is option C: "Assertion is true and reason is false."

---