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Assertion (A). Dictyostele is present in...

Assertion (A). Dictyostele is present in rhizome of Pteris vittata.
Reason (R ). Meristeles are scattered in the rhizome of Pteris vittata.

A

Both A and R are true but R is not correct explanation of A

B

A is true but R is false

C

A is false but R is true

D

Both A and R are true and R is correct explanation of A.

Text Solution

AI Generated Solution

The correct Answer is:
### Step-by-Step Solution: 1. **Understanding the Assertion (A)**: - The assertion states that "Dictyostele is present in the rhizome of Pteris vittata." - Dictyostele is a type of vascular arrangement where the vascular tissues are organized in a specific manner, typically in rings or scattered. 2. **Analyzing the Reason (R)**: - The reason states that "Meristeles are scattered in the rhizome of Pteris vittata." - Meristeles refer to the vascular bundles or strands that can be found in the plant's structure. In the case of Dictyostele, these meristeles are indeed arranged in a scattered manner. 3. **Verifying the Truth of Assertion (A)**: - It is known that Dictyostele is indeed found in the rhizome of Pteris vittata. Therefore, the assertion is true. 4. **Verifying the Truth of Reason (R)**: - Since Dictyostele consists of 2 to 3 meristele rings that are arranged around a central pith, and these meristeles are scattered, the reason is also true. 5. **Determining the Relationship Between A and R**: - The reason (R) provides a correct explanation for the assertion (A) because the presence of scattered meristeles in the rhizome is what constitutes the Dictyostele structure. 6. **Conclusion**: - Both the assertion and the reason are true, and the reason correctly explains the assertion. Therefore, the correct answer is: Both A and R are true, and R is the correct explanation of A. ### Final Answer: Both A and R are true, and R is the correct explanation of A. ---
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