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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:
A
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[A]: The secondary pholem consititutes a less poriment part of the tree trunk than the secondry xylem [R] : The amount of Phloem produced by the cambium is smaller than that of seconday

A tissue is a group of similar cells held together by a cementing substance produced by them, for performing a specific function. There are two types of tissue in plants i.e., meristematic tissue and permanent tissue. Meristematic tissue are found in all growing parts of plants such as root and shoot tips. These are called apical meristem. The tissue occurs right from the birth of plant, are called primary meristems. Permanent tissue arise from meristematic tissue and constitute major portion of the plant body. These includes simple and complex tissues. Simple tissues are parenchyma, sclerenchyma and collenchyma, complex tissue are xylem and phloem. Four students observed parenchyma tissue and drew following diagrams. Which one is correct?

A tissue is a group of similar cells held together by a cementing substance produced by them, for performing a specific function. There are two types of tissue in plants i.e., meristematic tissue and permanent tissue. Meristematic tissue are found in all growing parts of plants such as root and shoot tips. These are called apical meristem. The tissue occurs right from the birth of plant, are called primary meristems. Permanent tissue arise from meristematic tissue and constitute major portion of the plant body. These includes simple and complex tissues. Simple tissues are parenchyma, sclerenchyma and collenchyma, complex tissue are xylem and phloem. Which cells have the ability to divide?

TRUEMAN BIOLOGY-Plant Morphology & Reproduction -ASSERTION AND REASON
  1. Assertion : In collateral vascular bundles phloem is situated toward ...

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  2. [A]: The secondary pholem consititutes a less poriment 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 endomermi...

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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 differ- entiated into differe...

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

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  19. given below are assertion and reson. Point out if Assertion . In woo...

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

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