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.

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Solution

Option (d).

All of us respond immediately to the changes in our surroundings. Changes in our surroundings that make us respond to them are called stimuli. A chick hatching out of an egg is a natural phenomenon of reproduction in hens. It requires a particular time period and temperature to occur. Hence it is not a response to stimuli.

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Q. When the leaves of a Mimosa pudica plant are touched with a finger, they fold up quickly. This is an example of :
(a) chemotropism
(b) thigmonasty
(c) photonasty
(d) thigmotropism

Q. Which of the following is not caused by a growth movement?
(a) bending of the shoot of a plant in response to light
(b) closing up of leaves of a sensitive plant on touching with an object
(c) climbing up of a plant on an object by using tendrils
(d) movement of the root of a plant towards a source of water

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. 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. Give reason for why a chick hatching out of an egg is not an example of response to stimulus?

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Response to Stimulus

Standard VI Biology

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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.

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.