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Science · 2023 · 2 marks
CBSE 2023 · Region 6 · Set 1 · Q22
List two differences between the movement of leaves of a sensitive plant and the movement of a shoot towards light.What happens at synapse between two neurons ? State briefly.
List two differences between the movement of leaves of a sensitive plant and the movement of a shoot towards light.
What happens at synapse between two neurons ? State briefly.
Marking-scheme solution
(a)
or any other OR
| Movement of Leaves of Sensitive plant | Movement of shoot towards light |
| It is not a growth related movement. | It is due to the growth in plant stem |
| Fast | Slow |
| Reversible response | Irreversible response |
| Non directional movement. | Directional movement. |
| Stimulus -touch | Stimulus -light |
(b) At synapse the electrical signals are converted into chemicals, that can easily cross the gap and pass on to the next neurons, where it is again converted into electric signals. In this way the impulse is transmitted from one neuron to another.
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CBSE Class 10 Science past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.