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प्रश्न
What is meant by nastic movements in plants? Give one example of nastic movements in plants.
उत्तर
The non-directional movement of a plant part in response to an external stimulus is known as nastic movement. The folding up of leaves in sensitive plants in response to touch is an example of nastic movement.
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संबंधित प्रश्न
To which directional stimuli do roots respond?
Why is the closing of a dandelion flower at dusk (when it gets dark) not a tropism?
What is meant by ‘positive geotropism’ and ‘negative geotropism’? Give one example of each type. Draw a labelled diagram to illustrate your answer, indicating the plant part, which shows positive geotropism, and the plant part, which shows negative geotropism.
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 response of a plant part towards gravity is ______.
Higher Order Thinking Skill.
There are 3 plants A, B and C. The flowers of A open their petals in bright light during the day but closes when it gets dark at night. On the other hand, the flowers of plant B open their petals at night but closes during the day when there is bright light. The leaves of plant C fold up and droop when touched with fingers or any other solid object.
- Name the phenomenon shown by the flowers of plant A and B.
- Name one plant each which behaves like the flowers of plant A and B.
- Name the phenomenon exhibited by the leaves of plant C.
- Name the plant which behaves like the leaves of plant 'C'?
The leaves of Mimosa are sensitive to ____________.
Write the scientific terms used to represent the following:
Growing of roots towards the gravity.
Give the scientific term for the following:
Growth-dependent movement in plants.
What does a Mimosapudica plant do in response to touch? What is the phenomenon known as?
