Assertion :- In majority of angiosperms a typical anther is bilobed.
Reason :- lt's each lobe having two theca.

Options

A. A: if assertion and reason are true, and reason is correct explanation of assertion.
B. B: if assertion and reason are true, but reason is not the correct explanation of assertion
C. C: if assertion is true and reason is false
D. D: both are false.

Answer

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that in the majority of angiosperms, a typical anther is bilobed.
- Angiosperms are flowering plants, and their anthers are indeed typically bilobed, meaning they have two distinct lobes.

2. **Understanding the Reason**:
- The reason provided states that each lobe has two theca.
- This is also accurate, as each lobe of the anther contains two thecae (singular: theca), which are the chambers where pollen grains are produced.

3. **Connecting Assertion and Reason**:
- The assertion and reason are related. The bilobed structure of the anther allows for the presence of two thecae in each lobe, which aids in the production of pollen grains.
- Therefore, the reason explains why the assertion is true.

4. **Conclusion**:
- Both the assertion and reason are true, and the reason correctly explains the assertion.
- Thus, the correct answer is that both statements are true and the reason is the correct explanation of the assertion.

### Final Answer:
- The correct option is **Option A**: Both assertion and reason are true, and the reason is the correct explanation of the assertion.

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