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प्रश्न
A growing seedling is kept in a dark room. A burning candle is placed near it for a few days. The top part of seedling bends towards the burning candle. This is an example of :
(a) chemotropism
(b) hydrotropism
(c) phototropism
(d) geotropism
उत्तर
(c) phototropism
The bending of the top part of the seedling towards the burning candle is an example of phototropism.
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संबंधित प्रश्न
What is the stimulus in thigmotropism?
Give the scientific terms used to represent the Winding of tendril around a support.
Name the five types of tropisms.
Name the plant part which bends towards light but away from the force of gravity.
Tendrils wind around a support in response to ______.
Name the plant organ which is positively geotropic
A potted plant is growing in a transparent glass jar. In this plant, X and Y are the two growing parts having a lot of meristematic tissue. It is observed that the part X of this plant exhibits positive geotropism but negative phototropism. On the other hand, part Y of this plant exhibits negative geotropism but positive phototropism.
(a) Name the part X of plant.
(b) Name the part Y of plant.
(c) Which part of the plant, X or Y, will exhibit positive hydrotropism?
(d) Which part of the plant, X or Y, can have tendrils on it?
(e) Which phytohormone causes the part X to exhibit negative phototropism?
What is meant by positive and negative tropic movements in plants? Explain them by giving suitable examples.
In the given figure (a), (b) and (c), which appears more accurate and why?
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| (a) | (b) | (c) |
Name the stimulus which causes the following movement in plant:
Thigmotropism
