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[A]: Sclerenchyma cells are rarely found...

[A]: Sclerenchyma cells are rarely found in plants.
[R]: Sclerencyma cells are dead but have pro- toplasm

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

Text Solution

AI Generated Solution

The correct Answer is:
To analyze the statements provided in the question regarding sclerenchyma cells, we will break down each assertion and reason step by step. ### Step-by-Step Solution: 1. **Understanding the Assertion (A)**: - The assertion states that "Sclerenchyma cells are rarely found in plants." - **Evaluation**: This statement is incorrect. Sclerenchyma cells are actually quite common in various parts of plants. They provide structural support and can be found in many tissues, such as stems, leaves, and seeds. 2. **Understanding the Reason (R)**: - The reason states that "Sclerenchyma cells are dead but have protoplasm." - **Evaluation**: This statement is also incorrect. Sclerenchyma cells are indeed dead at maturity, and they do not contain protoplasm. The absence of protoplasm is what characterizes them as dead cells. 3. **Conclusion**: - Since both the assertion (A) and the reason (R) are false, the correct answer to the question is that both statements are incorrect. ### Final Answer: Both A and R are false. ---
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TRUEMEN BIOLOGY ENGLISH-Plant Morphology & Reproduction -ASSERTION AND REASON
  1. [A]: The inner most distinict layer of the cortex is called endodermi...

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  2. [A]: Gramineoos type of stomata are found in Gramineae and Cyperaceae....

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  3. [A]: lntercellular spaces are found in mer-isematic cells (R]: The m...

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  4. [A]: Monocot stem has collateral open vascu- lar bundle. [R]: Open ...

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  5. [A]: Root system in hydrophytes is poorly de- veloped. [R]: The con...

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  6. [A]: Aerenchyma is a characteristic of litho- phyte. [R]: It is a sp...

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  7. [A]: Protostele is most simple primitive type of stele. [R]: Accordi...

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  8. [A]: Rubber is obtained from the latex of Hevea brasiliensis. [R]: B...

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  9. [A]: No fibres are found in plants. [R]: Xylem vessels are absent ...

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  10. [A]: Sclerenchyma cells are rarely found in plants. [R]: Sclerencym...

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  11. [A]: Hanstein's dermatogen is not eqyivalent to Haberlandt's Protoderm...

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  12. [A]: Trichomes may occur on all parts of a plant. [R]: Trichomes ei...

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  13. [A]: The vascular cambium is absent in monocots. [R]: The monocots ...

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  14. [A]: In the hydrophytes the Xylem is not differentiated into different...

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  15. [A]: Dicot stem shows secondary growth. [R]: Tissue system is not d...

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  16. Assertion : In woody stems, the amount of heartwood continues year aft...

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  17. [A]: The inner most distinct layer of the cortex is called endodermis...

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  18. [A]: Sieve tube members have abundant cytoplasm but there is no nucleu...

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  19. Assertion : In collateral vascular bundles phloem is situated toward ...

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  20. [A]: Xylem translocates water and dissolved mineral salts from the roo...

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