Assertion: Phytochrome, a protein, has regulatory functions.
Reason: Various morphogenetic processes are regulated by it.

Options

A. If Both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1)
B. If both Assertion and reason are true but the reason is not the correct explanation of the assertion, then mark (2).
C. If Assertion is true statement but reason is false, then mark (3)
D. If both Assertion and reason are false statements, then mark (4).

Answer

To analyze the assertion and reason provided in the question, we will follow these steps:

### Step 1: Understand the Assertion
The assertion states that "Phytochrome, a protein, has regulatory functions."
- Phytochrome is indeed a protein that plays a crucial role in plant growth and development. It acts as a photoreceptor, meaning it can detect light and regulate various physiological processes in response to light signals.

### Step 2: Understand the Reason
The reason states that "Various morphogenetic processes are regulated by it."
- Morphogenetic processes refer to the development and organization of plant structures. Phytochrome is known to regulate several of these processes, including seed germination, chlorophyll synthesis, and flowering.

### Step 3: Evaluate the Relationship
Now, we need to evaluate if the reason is a correct explanation of the assertion.
- Since phytochrome does have regulatory functions and it regulates various morphogenetic processes, the reason supports the assertion.

### Step 4: Conclusion
Both the assertion and the reason are true, and the reason correctly explains the assertion. Therefore, the correct answer is that both the assertion and reason are true, and the reason is the correct explanation of the assertion.

### Final Answer
Both assertion and reason are true, and the reason is the correct explanation of the assertion.

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