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Assertion: Ramenta are scales which cove...

Assertion: Ramenta are scales which cover young rhizome and leaves of Dryopteris.
Reason: Pteridium lacks rementa.

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:
b

In Drypoteris, young rhizone and leaves are covered with dry, brown, chaffy scales known as ramenta. In pteridium, the rhizome and the leaves especially while young, are covered by a felt of simple hairs, and the scales are conspicuously absent.
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Knowledge Check

  • Assertion: The sorus of pteridium is of coenosorus type. Reason: Pteridium lacks sori.

    A
    If both the assertion and the reason are true and the reason is a correct explanation of the assertion
    B
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    D
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  • Assertion: stomate are found on the surface of leaves in gymnosperms Reason: In gymnosperms.

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    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.
  • Plants which lack true roots, stems and leaves are called

    A
    Epiphytes
    B
    Thallophytes
    C
    Xerophytes
    D
    Hydrophytes
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