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प्रश्न
When the leaves of a sensitive plant are touched with a finger, they fold up and when light fades at dusk, the petals of a dandelion flower close.
State one way in which the above two processes are similar.
उत्तर
Both processes are similar as the response is not determined by the direction of the stimulus. They are the nastic movement.
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संबंधित प्रश्न
What is the stimulus in thigmotropism?
What does a stem (or shoot) do in response to light? What is this phenomenon known as?
What does a plant root do in response to water? What is this phenomenon known as?
What is the difference between photonasty and thigmonasty?
Name the plant organ which is negatively geotropic.
P, Q, R and S are four major types of phytohormones. P is a phytohormone which functions mainly as a growth inhibitor. It promotes the wilting and falling of leaves. Q, R and S are phytohormones which all promote growth of plants in various ways. Q is responsible for the phenomenon of phototropism in plants. R is involved mainly in shoot extensions. The phytohormone S helps in breaking the dormancy of seeds and buds. What are P, Q, R and S? Give one reason each for your choice.
Differentiate between:
Phototropism and chemotropism
Heliotropism is a kind of ______.
The leaves of the 'chhui-mui' plant begin to fold up and droop in response to a stimulus. Name the stimulus and write the cause for such a rapid movement. Is there any growth involved in the movement?
Name the stimulus which causes the following movement in plant:
Thigmotropism
