Question

Explain response to stimulus in living beings with the help of 3 examples

Answer 1

Answer:

All living organisms respond to stimuli by moving towards or away from it.Our environment is constantly changing, and in order for us and other living things to survive those changes, we must be able to respond to them. Any detectable change in the environment is called a stimulus. Usually, a stimulus is a product of change in an energy source or force, such as light, or sound, or heat. As humans, we detect and respond to stimulus in order to survive.

Examples -

i. The increased secretion of saliva on seeing our favourite food is the response to the flavour of the food.

ii. A bright flash of light makes us wink or close our eyes where light is the stimulus.

iii. The leaves of the Touch-me-not' plant droop on touching them.

iv. The tip of the shoot moves towards light.