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प्रश्न
Ali has some pea plants in his garden which need a support to grow as seen in the picture given below:
- Name the phenomenon depicted by the shoot in the given figure.
- Define the above phenomenon.
- Write the name of the part marked X.
उत्तर
- Thigmotropism. Tendrils coiling towards objects they come into contact with show thigmotropism.
- In plants, thigmotropism is a tropic movement in response to an external stimulus, sometimes referred to as a contact stimulus.
- The part marked X is Leaf Tendril.
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संबंधित प्रश्न
Name the type of chemical substances that control the growth in plants.
Name the plant organ which is positively hydrotropic.
Why is the closing of a dandelion flower at dusk (when it gets dark) not a tropism?
Name five stimuli which act on plants. Name the type of tropism produced by each one of these stimuli.
The growth of tendrils in pea plants is due to the :
(a) effect of sunlight on the tendril cells facing the sun
(b) effect of gravity on the part of tendril hanging down towards the earth
(c) rapid cell division and elongation in tendril cells that are away from the support
(d) rapid cell division and elongation in tendril cells in contact with the support
The tropic movement that helps the climbing vines to find a suitable support is ______.
The movement of shoot towards light is
Name a plant hormone responsible for bending of a shoot of a plant when it is exposed to unidirectional light. How does is promote phototropism?
The growth movement of plant parts which occurs due to touch stimulus is called ______.
Name the stimulus which causes the following movement in plant:
Hydrotropism
