Lateral hearts are present in

Options

A. 7th and 9th segments
B. 12th and 13th segments
C. 8th and 10th segments
D. 4th and 5th segments.

Explanation

**Step-by-Step Solution:**

1. **Identify the Organism**: The question asks about the presence of lateral hearts. The organism known for having lateral hearts is the earthworm.

2. **Understanding Lateral Hearts**: In the context of annelids (the group of animals that includes earthworms), these lateral hearts are also referred to as pseudohearts.

3. **Terminology**: Lateral hearts can also be called commissural vessels. This terminology is important to understand the function and structure of these vessels.

4. **Location of Lateral Hearts**: The lateral hearts are specifically located in the segments of the earthworm, particularly from the 7th to the 9th segments.

5. **Function of Lateral Hearts**: These lateral hearts serve the function of pumping blood from the dorsal vessel to the ventral vessel, which is why they are termed pseudohearts.

6. **Conclusion**: Therefore, the correct answer to the question "Lateral hearts are present in" is that they are found in the earthworm, specifically in segments 7 to 9.

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