Question

If an insect sits on the open mouth of the pitcher plant, the flap of the mouth closes shut. The response of pitcher plant is a result of a change, which occurred in the surroundings of the pitcher plant, known as -

• A. heating
• B. stimulus
• C. adaptation
• D. acclimatisation

Answer 1

The correct option is B

stimulus

Living things act in various ways when responding to stimulus. Any change in the surroundings that makes the organisms respond to them is known as 'stimulus'. If an insect sits on the open mouth of the pitcher plant, the flap of the mouth closes shut. The response of pitcher plant is a result of a change, which occurred in the surroundings of the pitcher plant, known as - responsiveness to stimulus.