Response to Stimulus

Q.

Question 6

Which of the following is not an example of response to a stimulus?
(a) Watering in mouth when we see delicious food items.
(b) Closing of leaves of Mimosa plant when touched.
(c) Shutting our eyes when an object is suddenly thrown in our direction.
(d) A chick hatching out of an egg.

Q.

All living organisms respond to stimuli.

1. True

2. False

Q.

Match the following characteristics of living organisms with the details.

$$\begin{array}{cc}\text{Characteristic}& \text{Details}\\ 1.\text{Response to stimuli}& \text{a) Giving rise to another organism of the same kind}\\ 2.\text{Reproduction}& \text{b) Reaction to sensations like touch, light, heat, cold and sound}\\ 3.\text{Adaptation}& \text{c) The event at which an organism ceases to live}\\ 4.\text{Death}& \text{d) Ability of an organism to adjust to the current environment}\end{array}$$

1. 1 - b, 2 - a, 3 - d, 4 - c

2. 1 - a, 2 - b, 3 - d, 4 - c

3. 1 - b, 2 - a, 3 - c, 4 - d

4. None of these

Q.

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

1. heating

2. stimulus

3. adaptation

4. acclimatisation