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प्रश्न
What does a stem (or shoot) do in response to gravity? What is this phenomenon known as?
उत्तर
Stem always grows up and away from the pull of gravity. This phenomenon is known as negative geotropism.
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संबंधित प्रश्न
Where is the auxin hormone made in a plant stem?
Fill in the following blank :
...... is the hormone that causes phototropism in plants
What are the different types of tropisms? Define each type of tropism. Write the name of stimulus in each case
Name five stimuli which act on plants. Name the type of tropism produced by each one of these stimuli.
Which of the following acts as a stimulus in the process of hydrotropism?
(a) hydrocarbon
(b) hydrogen oxide
(c) hydrogen chloride
(d) hydrogen peroxide
Differentiate between:
Phototropism and chemotropism
State whether true or false. If false, correct the statement.
Shoot is positively phototropic and negatively geotropic.
The petals of the moon flower open up in the morning and close in the evening. This is called photo nasty.
The height of a plant is regulated by ______.
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.
