Assertion: The protein encoded by cry I Ab is not effective in control of cotton bollowrms
Reason :Most Bt toxin are insect group specific
(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 Assetion
(c) If Assertion is True but the Reason is False
(d) If both Assertion & Reason are false

Options

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

Answer

To solve the question, we need to analyze both the assertion and the reason provided.

### Step 1: Analyze the Assertion
The assertion states: "The protein encoded by cry I Ab is not effective in control of cotton bollowrms."
- **Understanding**: Cry I Ab is a specific protein produced by the bacterium Bacillus thuringiensis (Bt). It is known to be effective against certain pests, particularly corn borers, but not against cotton bollworms.

### Step 2: Analyze the Reason
The reason states: "Most Bt toxins are insect group specific."
- **Understanding**: This statement is true. Bt toxins, including various cry proteins, are indeed specific to certain groups of insects. This specificity means that a particular cry protein will only be effective against certain types of pests and not others.

### Step 3: Determine the Truth Value of Each Statement
- **Assertion**: True (Cry I Ab is ineffective against cotton bollworms).
- **Reason**: True (Most Bt toxins are insect group specific).

### Step 4: Evaluate the Relationship Between Assertion and Reason
- The assertion is about the ineffectiveness of Cry I Ab against cotton bollworms, while the reason explains the general specificity of Bt toxins. Although both statements are true, the reason does not specifically explain why Cry I Ab is ineffective against cotton bollworms.

### Conclusion
Since both the assertion and reason are true, but the reason does not correctly explain the assertion, the correct answer is:
**(b) If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.**

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