A hard woody straight and pointed structure present in the axil of a leaf sometimes bearing leaves is called as ______________.

Bristle

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Thorn

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Prickle

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None of these

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Solution

The correct option is B Thorn
Thorns are straight, pointed, hard or woody structures sometimes they bear leaves, flowers or even may be branched. Thorns are a type of aerial stem modification.
In Citrus, Duranta and Angel thorns are modified axillary buds; in Carrissa (Or. Khirkoli) terminal bud gets modified into a thorn. Thorns are used as organs of defense or climbing (e.g. Bougainvillea) and check transpiration.
Hence A hard woody straight and pointed structure present in the axil of a leaf sometimes bearing leaves is called thorns.
So, the correct answer is 'Thorn'.

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Which of the following are correct statements?

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2) A bud is present in the axil of every leaflet.

3) A bud is present in the axil of a branch.

4) The rachis of a compound leaf represents the midrib of the leaf.

When a flower arises in the axil of leaf-like structure, this structure is known as __.

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