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Number of somites present in earthworm a...

Number of somites present in earthworm are :

A

18537

B

100-120

C

200-300

D

150-250

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding the Question**: The question asks for the number of somites present in an earthworm. Somites are segments of the body that are characteristic of certain animal phyla, including annelids. 2. **Identifying the Organism**: The earthworm belongs to the phylum Annelida. This phylum is known for its segmented body structure, which is a key feature of annelids. 3. **Defining Metamerism**: In annelids, the body is divided into short, similar segments known as metamers. This segmentation is a defining characteristic of the phylum. 4. **Counting the Segments**: In mature earthworms, the body is typically divided into approximately 100 to 120 segments. Each of these segments corresponds to a somite. 5. **Evaluating Options**: The options provided are: - A) 18537 - B) 100 to 120 - C) 200 to 300 - D) 150 to 250 Based on the information gathered, option B (100 to 120) is the correct answer. 6. **Conclusion**: Therefore, the number of somites present in an earthworm is 100 to 120. **Final Answer**: The number of somites present in earthworm is 100 to 120. ---
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