Synaptic vesicle is found in
Pre-synaptic neuron
The correct option is A:
Explanation of the correct option:
Pre-synaptic neurons contain synaptic vesicles. These synaptic vesicles contain neurotransmitters that are released into the synaptic cleft in response to stimulation and subsequently interact with the receptors of the post-synaptic neuron.
Explanation of the incorrect options:
Option B:
Post-synaptic neurons do not contain any synaptic vesicles but it contains receptors on the post-synaptic neuronal membrane to detect the neurotransmitters released by the pre-synaptic neuron.
Option C:
A synaptic cleft is a gap or junction between pre-synaptic and post-synaptic neurons. It does not have any synaptic vesicles.
Option D:
It is an incorrect option because option A is correct.
Final answer: Synaptic vesicles are found in the pre-synaptic neurons.