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Assertion: The female cone of Cycas is n...

Assertion: The female cone of Cycas is not true cone.
Its formation checks the growth of the stem.

A

If both the assertion and the reason are true and the reason is a correct explanation of the assertion

B

If both 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

Text Solution

Verified by Experts

The correct Answer is:
c

In Cycas there is no true and compact or properly organised female cone. Megaporophylls are loosely arranged and thus form a loose female strobllus. The growing point of the stem is unaffected by their development and continues its growth through the loose strobilus.
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Knowledge Check

  • Female cone of Pinus is a

    A
    Modified scale
    B
    Modified needle
    C
    Modified dwarf shoot
    D
    Modified long shoot.
  • Organised female cone is absent in

    A
    Ephedra
    B
    Pinus
    C
    Cycas
    D
    None of these
  • Assertion: The female cones take much time to mature. Reason: The seeds are shed when the cone is 22 months cones. Reason: Male and female cones appears altenately on the same branch of the Pinus.

    A
    If both the assertion and the reason are true and the reason is a correct explanation of the assertion
    B
    If both 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
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    Female cone of Pinus is considered equivalent to

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    Assertion. Female plant of Cycas shows sympodial branching. Reason. A lateral branch of Cycas aries near the base of female cone.

    Assertion : In cymose branching, growth of terminal bud stops after some time. Reason : The growth of the main stem is definite.