First slide
The Stem
Question

 A modified stem is woody and helps in providing protection to plant from herbivores. The modified stem is 

Easy
Solution

Thorns are sharp, straight, woody modified aerial stems with pointed tip which helps in providing protection to plant and minimizing transpiration. Sucker are subaerial modified stems which are initially underground. Spine is a leaf modification meant for protection and minimizing transpiration. Tendril provides support to the weak stem to climb over other objects.

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