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Control and Coordination — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceControl and Coordination1 Mark
MCQ
Irritability/ Reactivity/ Sensitivity of a plant is :
  • A
    Response to stimulus in soil
  • ✓
    Response to a change in environment
  • C
    Movement caused by an external force
  • D
    Ability to move
✓

Answer

Correct option: B.
Response to a change in environment
Irritability, reactivity and sensitivity are excitatory response shown by plants to respond to changes in their environment.
The most common response shown by plants is movement in response to environment change.
For example, closing of leaves of Mimosa pudica on touching or closing of traps on a Venus fly trap.

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