Liquid skeleton is present in _______.

Answer

**Step-by-Step Solution:**

1. **Understanding the Term "Liquid Skeleton":**
- A liquid skeleton refers to a type of skeletal structure that is not made of bones or cartilage but is instead composed of liquid. This type of skeleton is typically found in certain invertebrates.

2. **Identifying Organisms with Liquid Skeletons:**
- Liquid skeletons are primarily found in lower invertebrates, which are organisms that lack a backbone. One of the most common examples of such an organism is the earthworm.

3. **Function of Liquid Skeletons:**
- The liquid skeleton serves as a supportive structure that helps the organism maintain its shape, facilitates movement, and protects against external environmental factors. In the case of earthworms, the liquid skeleton allows them to move efficiently through soil and other substrates.

4. **Conclusion:**
- Based on the information gathered, we can conclude that the liquid skeleton is present in earthworms.

**Final Answer:**
Liquid skeleton is present in **earthworms**.

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