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[A]: The inner most distinct layer of t...

[A]: The inner most distinct layer of the cortex is called endodermis.
[R]: The cells of endodermis are nonliving and bear casparian strips

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

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The correct Answer is:
C
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[A]: The inner most distinict layer of the cortex is called endomermis. (A]: The cells of endodermis are nonliving and bear casparian strips

Read the following statements with respect to dicot stem and select the right choice . i. The epidermis is covered with a thick layer of cuticle . ii. The cells of endodermis are rich in starch grains. iii. The pericycle is present on the inner side of endodermis and above the phloem in the of semilunar patches of sclerenchyma. iv. The vascular bundles are arranged in a ring .

Assertion: In dicot stem, endodermis is also called as starch sheath. Reason: The cells of the endodermis are rich in starch gains.

[A] : When a foreign object , such as a sand grain gets in between the shell and mantle , it results in the formation of a pearl . [R] : The inner nacreous layer of irridiscent nacre is called the mother of pearl which is formed by many thin and alternating layers of calcium carbonate and concholin .

The casparian strips of root endodermis is made up of

Consider the following statement (A) In a dicot root, the vascular bundles are collateral and endarch (B) The inner most layer of cortex in a dicot root is endodermis (C) In a dicot root, the phloem masses are separated from the xylem by parenchymatous cells that are known as the conjunctive tissue Of these statement given above

Fill in the blanks: a In dicot root, the cortex consists of several layers of thin walled parenchyma cells …1.. Intercellular spaces b The innermost layer of the cortex is called ..2.. It comprises …3…. layers(s) of barrel shaped cells …4... intercellular spaces

TRUEMAN BIOLOGY-Plant Morphology & Reproduction -ASSERTION AND REASON
  1. [A]: The inner most distinict layer of the cortex is called endomermi...

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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 differ- entiated into differe...

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

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

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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 cy- toplasm but there is no nucl...

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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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