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प्रश्न
The movement of sunflower in accordance with the path of the sun is due to :
(a) photonasty
(b) phototropism
(c) hydrotropism
(d) chemotropism
उत्तर
(a) photonasty
It is a non-directional movement of plant parts in response to light.
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संबंधित प्रश्न
What is the stimulus in phototropism?
Give the scientific terms used to represent the Bending of a shoot towards light.
Plant roots grow ______ and in the direction of force of ______.
Name the plant organ which is negatively geotropic.
What are the different types of tropisms? Define each type of tropism. Write the name of stimulus in each case
Match column A with column B.
| Column A | Column B |
| Roots growing downwards into soil. | Positive phototropism |
| Shoots growing towards the light. | Negative geotropism |
| Shoots growing upward. | Negative phototropism |
| Roots growing downwards away from light. | Positive geotropism |
What is the difference between movement of flower in sunflower plant and closing of the leaves in the Mimosa pudica?
The petals of the moon flower open up in the morning and close in the evening. This is called photo nasty.
Name the following:
The tropic movement of plant parts in response to chemicals.
Name the stimulus which causes the following movement in plant:
Geotropism
