Thorn is a modified branch because:

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(C) thorn is considered a modified branch because it develops from the axillary bud,which is located in the axil of a leaf.Since the axillary bud is t

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It arises in the axil of a leaf

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(C) thorn is considered a modified branch because it develops from the axillary bud,which is located in the axil of a leaf.Since the axillary bud is the site where a branch normally originates,its transformation into a hard,woody,and pointed structure (a thorn) confirms that it is a modified branch.Other options like being hard,pointed,or defensive are characteristics of thorns,but they do not define their morphological origin as a branch.

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