Number of chambers in the heart of cockroach :
(a) 3
(b) 4
(c) 13
(d) 23

Options

A. 3
B. 4
C. 13
D. 23

Answer

To determine the number of chambers in the heart of a cockroach, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question is asking for the number of chambers in the heart of a cockroach.

2. **Identify the Heart Structure in Cockroaches**: Cockroaches have a unique heart structure that is different from mammals. Their heart is not divided into four chambers like in humans.

3. **Research the Number of Chambers**: In the case of cockroaches, their heart is referred to as a "tubular heart" and is known to have multiple chambers.

4. **Count the Chambers**: The heart of a cockroach consists of **13 chambers**. These chambers are arranged in a tubular structure and are responsible for pumping hemolymph (the insect equivalent of blood) throughout the body.

5. **Conclusion**: Based on the information gathered, the correct answer to the question is **(c) 13**.

### Final Answer:
The number of chambers in the heart of a cockroach is **13** (Option C).

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