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[A]: In the hydrophytes the Xylem is not...

[A]: In the hydrophytes the Xylem is not differentiated into different types of cells.
[R]: Xylem provides support and helps in the conduction of water which is not very important in hydrophytes

A

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

B

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

C

(c) If A is true and R is false

D

(d) If both A and R are false

Text Solution

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The correct Answer is:
A
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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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  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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