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Standard X
Biology
Question

The ability of an organism to respond to external stimuli is called as
  1. Sensitivity
  2. Homeostasis
  3. Metabolism
  4. Reproduction

A
Metabolism
B
Homeostasis
C
Sensitivity
D
Reproduction
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Solution
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  • The stimulus(singular) is any change in the organism's internal or external environment that causes the organism to react.
  • The ability of an organism to respond to external stimuli is called sensitivity. For example, Plants grow towards light(external stimuli) sources, and if the direction of light is changed, the plant will also change its direction of growth to accommodate for survival.
  • So, the correct answer is 'Sensitivity'.

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