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Question
List two differences between the movement of leaves of a sensitive plant and the movement of a shoot towards light.
Solution
| Movement of leaves of a sensitive plant | Movement of a shoot towards light |
| A nastic movement is the name for the kind of movement that sensitive plant leaves exhibit. They occur instantly in reaction to a touch stimulation (thigmotropism). | Tropic movement describes a shoot's movement in the direction of light. A lengthier amount of time passes during it. |
| The direction of the stimulus has no bearing on this kind of movement. | Phototropism is the name for this movement, which is dependent on the direction of the light. Movement of this kind is growth-oriented and directional. |
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Given below are the figures showing some kinds of tropic movements in plants. Study the same and answer the following questions:
- Which one of these figures is correct? Give reason in support of your answer.
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- What are the two stimuli which affect root system and shoot system positively? Name them.
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- Gravity
- Water
- Draw a neat and labelled diagram of the longitudinal section of a pistil showing chemotropism in an angiospermic plant.
