SCIENCE
BOTANY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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circinate vernation
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venation
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phyllotaxy
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phyllode
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Detailed explanation-1: -In fern: Importance to humans. Edible fern crosiers (young leaves with coiled hook-shaped tips) are popular in some areas.
Detailed explanation-2: -Circinate refers to leaves or fronds that are rolled up with the tip in the centre. This protects the tips of growing young tender leaves. Hence, circinate vernation is a term that describes the tightly coiled manner in which a fern frond emerges where the tender growing tip of the frond is protected within a coil.
Detailed explanation-3: -Circinate venation refers to the emergence of new leaves in ferns by unrolling from a tight coil. The coiled frond that emerges initially is termed a fiddlehead or crozier. This coiled structure protects the tender tips of the leaves.
Detailed explanation-4: -Circinate vernation is the manner in which most fern fronds emerge. 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.