Assertion:Electrical synapses are rare in our system.
Reason:Impulse transmission across an electrical synapse is slower than that across a chemical synapse.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false.

Explanation

To analyze the given assertion and reason, we can break down the problem into a step-by-step solution:

### Step 1: Understand the Assertion
The assertion states that "Electrical synapses are rare in our system." This means that in the human nervous system, electrical synapses are not commonly found compared to other types of synapses.

### Step 2: Understand the Reason
The reason provided is that "Impulse transmission across an electrical synapse is slower than that across a chemical synapse." This implies that electrical synapses are less efficient in transmitting impulses compared to chemical synapses.

### Step 3: Evaluate the Truth of the Assertion
We know from biological studies that electrical synapses do exist but are indeed rare compared to chemical synapses. Therefore, the assertion is true.

### Step 4: Evaluate the Truth of the Reason
The reason states that impulse transmission across electrical synapses is slower than that across chemical synapses. However, this is incorrect. In fact, impulse transmission across electrical synapses is generally faster than that across chemical synapses because electrical synapses allow direct flow of ions between neurons, while chemical synapses involve the release and diffusion of neurotransmitters, which takes more time.

### Step 5: Conclusion
Since the assertion is true and the reason is false, we conclude that the correct option is: "Assertion is true, but reason is false."

### Final Answer
The correct option is: If assertion is true, but reason is false.

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