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Assetion : collenchyma, sclerenchyma and...

Assetion : collenchyma, sclerenchyma and xylem provide mechanical suppot to the plant body ltbvrgt Reason: Their cell walls are thick and lignified

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The correct Answer is:
c
Collenchyma, sclernchyma and xylem provides mechanical support to the plant parts.
Cell wall is thick and lignified in sclerenchyma and xylem but not in collenchyma.
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Explore conceptually related problems

Give the role of collenchyma and sclerenchyma in providing support to the plant.

Name the plant tissue which show the following features ? (a) made up of living cells showing thickening, provide mechanical support to the plant. (b) made up of dead cells showing thickening : provide mechanical support to the plant, are made of one type of cells. (c) made up of living cells containing green coloured chloroplasts, possesses intercellular space.

Knowledge Check

  • Assertion : Sclerenchyma fibres constitute the major mechanical tissue of the plants. Reason : The cells are thick walled and are made up of lignin.

    A
    If both assertion and reason are true and reason is the correct explanation of assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
    C
    If assertion is true but reason is false.
    D
    If both assertion and reason are false.

  • Assertion : Sclerenchyma cells do not have plasmodesmata. Reason : The cell walls of some permanent tissues are heavily lignified.

    A
    If both the assertion and the reason are true and the reason is a correct explanation of the assertion
    B
    If both the assertion and reason are true but the reason is not a correct explanation of the assertion
    C
    If the assertion is true but the reason is false
    D
    If both the assertion and reason are false

  • Assertion: Parenchyma and collenchyma tissues act as mechanical tissue to plants. Reason: Parenchyma and collenchyma form an important part of the bark of trees.

    A
    Both Assertion and Reason are true and Reason is correct explanation of the assertion.
    B
    Both Assertion and Reason are true but Reason is not the correct explanation of the assertion.
    C
    Assertion is true, but Reason is false.
    D
    Assertion is false, but Reason is true.

    • Similar Questions

    Explore conceptually related problems

    Name the tissues which show the following features : 1. Cells are living , cells show thickening, provides mechanical support to plants 2. Cell are dead, cells show thickening, provides mechanical support to plants, made up of one type of cells 3. Cell are living , cells contain green coloured chloroplast, possess intercellular spaces.

    Differentiate between parenchyma, collenchyma and sclerenchyma on the basis of their cell wall.

    Differentiate between parenchyma, collenchyma and sclerenchyma on the basis of their cell wall.

    Refer to the given diagrammatic represention of parts of two different types of tissues , P and Q. Read the following statements regarding these tissues and select the correct statements . (i)P is a plant whereas Q is an animal tissue. (ii)P is the major water conducting tissue in vascular plants and provides mechanical strength to plant body. (iii)Q is a specialised tissue in animals for receiving stimuli and transmitting messages . (iv) P is composed of all dead cells whereas Q is composed of all living cells.

    Lignified cell wall Found in seed coat of legumes Provide mechanical support These characters are found in

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