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[A] : The narrow band of meristemetic ti...

[A] : The narrow band of meristemetic tissue present between pholem and xylem is called cambium
[R] : In dicotyleyledonous steam a part of the procambium remain maristemetic which is called cambium

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

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The correct Answer is:
To solve the question regarding the assertion and reasoning about cambium in dicotyledonous plants, we will break it down step by step. ### Step-by-Step Solution: 1. **Understanding the Assertion**: - The assertion states that "The narrow band of meristematic tissue present between phloem and xylem is called cambium." - This statement is true. Cambium is indeed a layer of meristematic tissue that is located between the xylem (which transports water) and phloem (which transports nutrients) in vascular plants, particularly in dicots. 2. **Understanding the Reasoning**: - The reasoning states that "In dicotyledonous stem, a part of the procambium remains meristematic which is called cambium." - This statement is also true. In dicot stems, the procambium differentiates into cambium, which continues to divide and contribute to secondary growth. 3. **Evaluating the Relationship**: - Now, we need to evaluate whether the reasoning correctly explains the assertion. - Since the assertion describes what cambium is and the reasoning explains how cambium is formed from procambium in dicots, it provides a valid explanation for the assertion. 4. **Conclusion**: - Both the assertion and the reasoning are true, and the reasoning correctly explains the assertion. Therefore, the answer is that both statements are correct, and the reasoning is a correct explanation of the assertion. ### Final Answer: Both the assertion and reasoning are correct, and the reasoning is a correct explanation of the assertion. ---
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TRUEMEN BIOLOGY ENGLISH-Plant Morphology & Reproduction -ASSERTION AND REASON
  1. Assertion : In collateral vascular bundles phloem is situated toward ...

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  2. [A]: The secondary phloem constitutes a less prominent part of the tre...

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  3. [A] : The narrow band of meristemetic tissue present between pholem an...

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  4. [A]: The inner most distinict layer of the cortex is called endodermi...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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