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Assertion :- Companion cells are essenti...

Assertion :- Companion cells are essential for functioning of sieve tubes.
Reason :- The companion cells help in maintaining the pressure gradient in sieve tubes.

A

If both Assertion & Reason are True & Reason is a correct explanation of the Assertion.

B

If both Assertion & Reason are True but the Reason is a correct explanation of the Assertion.

C

If Assertion is True but the Reason is False.

D

If both Assertion & Reason are false.

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • Which of the following cells helps in maintaining the pressure gradient in the sieve tubes?

    A
    Pholem parenchyma
    B
    Bast fibre
    C
    Companion cells
    D
    Wood fibre

  • The chief function of sieve tubes is

    A
    To translocate the organic materials manufactured in the leaves
    B
    To conduct minerals
    C
    To transport water from root to leaves
    D
    To help to plant in forming wood

  • Sieve tubes have

    A
    Apical and oblique septa
    B
    Perforated and longitudinal septa
    C
    Perforated and oblique septa
    D
    Simple oblique wall

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