Multiple choice

Circinate vernation is the characteristic feature of fern. It refers to

  1. coiling of young leaves

  2. heterophilly

  3. arrangement of leaves on stem

  4. attachment of sori on leaves

  5. -
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A Correct answer
Explanation

Circinate vernation is the manner in which a fern frond emerges. As the fern frond is formed, it is tightly curled so that the tender growing tip of the frond (and each subdivision of the frond) is protected within a coil.

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