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Question

In Bougainvillaea, thorns are the modifications of

A

Leaf

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B

Stem

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C

Stipules

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D

Adventitious root

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Solution

The correct option is B

Stem


Thorns

  • Thorns are modified stems that arise from the axillary buds of stems. Examples, Citrus and Bougainvillaea.
  • The stem is modified into woody, straight and pointed structures.

  • They protect the plants from browsing animals.


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