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प्रश्न
Design an experiment to demonstrate hydrotropism.
उत्तर
Take two small beakers and label them as A and B. Fill beaker A with water. Now make a cylindrical-shaped roll from a filter paper and keep it as a bridge between beaker A and beaker B, as shown in the figure. Attach few germinating seeds in the middle of the filter paper bridge. Now, cover the entire set-up with a transparent plastic container so that the moisture is retained.
Observation:
The roots of the germinating seeds will grow towards beaker A.
This experiment demonstrates the phenomenon of hydrotropism.
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संबंधित प्रश्न
What is the stimulus in phototropism?
What is the stimulus in geotropism?
What is the stimulus in hydrotropism?
Give the scientific terms used to represent the Growing of roots towards the earth.
What does a stem (or shoot) do in response to light? What is this phenomenon known as?
Name the two types of tendrils.
How are tropic movements helpful to plants? Explain with an example.
The response of leaves to the sunlight is called ______.
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.
The plant hormone which triggers the fall of mature leaves and fruits from the plant body is:
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
Name the stimulus which causes the following movements in plants.
phototropism, thigmotropism, hydrotropism and geotropism
The bending of root of a plant in response to water is called ______.
When the leaves of a sensitive plant are touched with a finger, they fold up, and when the light fades at dusk the petals of a sunflower. These two plants show ______ and ______ movements.
When the leaves of the Mimosa pudica plant are touched with a finger, they fold up quickly.
The petals of the moon flower open up in the morning and close in the evening. This is called photo nasty.
Write the scientific terms used to represent the following:
Bending of roots towards the water.
List two differences between the movement of leaves of a sensitive plant and the movement of a shoot towards light.
Which parts of a plant exhibit Negative geotropism?
