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प्रश्न
How is the movement of leaves of the sensitive plant different from the movement of a shoot towards light?
उत्तर १
The movements of the leaves of the sensitive plant are touch-sensitive and independent of growth, while the movement of the shoot towards light is growth-related and known as phototropism.
उत्तर २
The movement of leaves of the sensitive plant, Mimosa pudica or “touch me not”, occurs in response to touch or contact stimuli. This is done by plant cells by changing the amount of water in leaves. This movement is independent of growth. The movement of shoot towards light is known as phototropism. This type of movement is directional and is growth dependent.
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संबंधित प्रश्न
What is the stimulus in phototropism?
What is the stimulus in hydrotropism?
Give the scientific terms used to represent the Bending of a shoot towards light.
Give the scientific terms used to represent the Growing of roots towards the earth.
What is meant by nastic movements in plants? Give one example of nastic movements in plants.
What is the difference between photonasty and thigmonasty?
The root of a plant grows downward. This is known as ______.
Why is the closing of a dandelion flower at dusk (when it gets dark) not a tropism?
The movement of sunflower in accordance with the path of the sun is due to :
(a) photonasty
(b) phototropism
(c) hydrotropism
(d) chemotropism
Which of the following is not caused by a growth movement?
The growth of a pollen tube towards the ovule caused by a sugary substance as stimulus is an example of :
(a) phototropism
(b) chlorotropism
(c) gravitropism
(d) chemotropism
When the leaves of a Mimosa pudica plant are touched with a finger, they fold up quickly. This is an example of ______.
One of the following is not caused by the growth related movement of the concerned plant part. This is:
Differentiate between:
Thigmotropism and geotropism
A growing seedling is kept in the dark room. A burning candle is placed near it for a few days. The tip part of the seedling bends towards the burning candle. This is an example of ______.
Response of plant roots towards water is called:
Give one example of geotropism.
Arrange and rewrite the terms in the group in the correct order so as to be in a logical sequence, beginning with the term that is underlined.
Apical meristem, Positive phototropism, Auxins, Cell elongation.
The growth movement of plant parts which occurs due to touch stimulus is called ______.
Define the following term:
Clinostat
