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प्रश्न
The movement of a plant part in response to the force of attraction exerted by the earth is called :
(a) hydrotropism
(b) geotropism
(c) chemotropism
(d) phototropism
उत्तर
(c) geotropism
The movement of plant parts in response to the force of gravity is called geotropism.
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संबंधित प्रश्न
What is the stimulus in phototropism?
What is the stimulus in hydrotropism?
What happens to the moonflower
- during the daytime, and
- at night?
What is this phenomenon known as?
What is meant by ‘positive geotropism’ and ‘negative geotropism’? Give one example of each type. Draw a labelled diagram to illustrate your answer, indicating the plant part, which shows positive geotropism, and the plant part, which shows negative geotropism.
Dandelion flowers open the petals in bright light during the daytime but close the petals in dark at night. This response of dandelion flowers to light is called:
To which of the following directional stimulus roots of a plant do not respond?
Differentiate between:
Phototropism and chemotropism
How is movement in plants different from that in animals?
What is a tropic movement? Explain with an example.
Give an example for the movement of plant part which is very quick and can be observed easily.
