Which of the following is not an example of response to 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.
plz answer correctly with explanation
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d) A chick hatching out of an egg.
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Answer:
c) Closing of leaves of mimosa plant when touched.
Explanation:
When touched, this sensitive leaf reacts to stimulus as there is a higher pressure at that point and the water in the vacuoles of the cells of the leaf lose water to the adjacent cell. All the water escapes the leaf (via the pulvinus) which then becomes flaccid. This causes the leaves to close.
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