Advertisements
Advertisements
Question
What is the difference between photonasty and thigmonasty?
Solution
| Photonasty | Thigmonasty |
| It is the non-directional movement in plants in response to light. | It is the non-directional movement in plants in response to touch. |
APPEARS IN
RELATED QUESTIONS
Plant parts show two types of movements, one dependent on growth and other independent of growth. Give one example which does not depend on growth
Distinguish between tropic movements and nastic movements in plants. Give examples to illustrate your answer.
What is meant by 'tropisms' (or tropic movements)? Explain with an example.
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.
What is meant by positive tropism and negative tropism? Explain with examples.
The plant hormone which triggers the fall of mature leaves and fruits from the plant body is:
The bending of root of a plant in response to water is called ______.
State whether true or false. If false, correct the statement.
The response of a part of plant to the chemical stimulus is called phototropism.
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'?
Thigmonasty can be seen in ______.
