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प्रश्न
Differentiate between:
Phototropism and chemotropism
उत्तर
| Phototropism | Chemotropism | ||
| 1. | Directional growth movement of a plant part in response to light. | 1. | Directional growth movement of a plant part in response to chemicals. |
| 2. | Example: Growth of plant shoots in an upward direction. | 2. | Example: Growth of pollen tube towards female gametophyte |
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संबंधित प्रश्न
What is the stimulus in thigmotropism?
Name the two types of tendrils.
A plant's response to gravity is called ______.
Why is the folding up of the leaves of a sensitive plant on touching with a finger not a tropism?
Define hydrotropism. Give one example of hydrotropism. State whether this example is of positive hydrotropism or negative hydrotropism. Illustrate your answer with the help of labelled diagram.
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:
The bending of the stem of a plant towards a source of light is caused by the action of a phytohormone known as :
(a) abscisic acid
(b) auxin
(c) gibberellins
(d) cytokinin
The response of a plant part towards gravity is ______.
Any change in the environment to which an organism responds is called ____________.
The plant part which exhibits negative geotropism is ______.
