Number of chambers in the heart of cockroach :

Options

A. 5
B. 9
C. 13
D. 16

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 Structure of the Cockroach Heart**:
- The heart of a cockroach is not like the mammalian heart. It is a tubular structure.

2. **Identify the Total Number of Chambers**:
- The cockroach heart consists of multiple chambers. Specifically, it has 13 chambers.

3. **Learn About the Function of Each Chamber**:
- Each chamber in the cockroach heart receives blood through openings called ostia. These ostia allow the entry of hemolymph (the insect equivalent of blood) into the heart.

4. **Understand the Flow of Blood**:
- The first chamber of the cockroach heart opens into the aorta, which then distributes the hemolymph to the head and other parts of the body.

5. **Select the Correct Answer**:
- Based on the information gathered, the correct answer to the question regarding the number of chambers in the heart of a cockroach is 13.

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

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