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प्रश्न
To which directional stimuli do shoots respond?
उत्तर
Shoots of a plant respond to light.
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संबंधित प्रश्न
How is the movement of leaves of the sensitive plant different from the movement of a shoot towards light?
What is the stimulus in thigmotropism?
Give one example of chemotropism. State whether this example is of positive chemotropism or negative chemotropism.
Give one example of a plant part which is positively phototropic but negatively geotropic.
A potted plant is kept horizontally for a considerable time. The three positions of the parts A and B of the potted plant are shown in the following figures:
- Which figure shows the correct position taken by the parts A and B of the plant?
- What type of phenomenon is exhibited by the figure chosen in (a) above?
Why is the closing of a dandelion flower at dusk (when it gets dark) not a tropism?
One of the following plant hormones is responsible for the phenomenon of phototropism in plants. This is :
(a) gibberellin
(b) eltroxin
(c) cytokinin
(d) auxin
The growth movement of a plant part in response to the touch of an object is called :
(a) thigmonasty
(b) hydrotropism
(c) thigmotropism
(d) geotropism
To which of the following directional stimulus roots of a plant do not respond?
The venus flytrap plants are examples of ______.
