Q17 / 180 · NEET 2017 · Botany

In Bougainvillea, thorns are the modifications of:

  • A
    Stipules
  • B
    Adventitious root
  • Correct answer
    C
    Stem
  • D
    Leaf

Solution

Thorns are hard, pointed straight structures for protection. These are modified stem.

Figure

Thorns represent the modification of an axillary shoot system in which the leaves are reduced and die quickly and the stems are heavily sclerified and grow for only a limited time. They help in providing protection.

Hence, the correct answer is option: 'C'.

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