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Question
Which of the following is not a stem modification?
Which of the following is not a stem modification?
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Solution
The correct option is A Pitcher of Nepenthes
Pitcher of Nepenthes is a modification of a leaf. Thorns of Citrus, tendrils of cucumber and flattened structures of Opuntia are examples of stem modifications. Thorns of Citrus are stiff, pointed structures that are produced by the modification of axillary bud. Tendrils of cucumber are axillary buds modified to form green, thread-like sensitive structures with adhesive glands for fixation. Flattened structures of Opuntia are known as phylloclades.
Pitcher of Nepenthes is a modification of a leaf. Thorns of Citrus, tendrils of cucumber and flattened structures of Opuntia are examples of stem modifications. Thorns of Citrus are stiff, pointed structures that are produced by the modification of axillary bud. Tendrils of cucumber are axillary buds modified to form green, thread-like sensitive structures with adhesive glands for fixation. Flattened structures of Opuntia are known as phylloclades.
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