The broad, thick walled tube of frog in which chyme is formed lies on side of the body cavity 

Options

A. right side
B. posterior
C. left side
D. middle point

Answer

### Step-by-Step Solution:

1. **Understanding Body Cavity**: The body cavity is a space within an animal's body that contains various organs and structures. It serves as a compartment for the internal organs.

2. **Identifying the Organ**: The question refers to the "broad, thick-walled tube" where chyme is formed. This organ is the stomach, which is responsible for the digestion of food.

3. **Formation of Chyme**: In the stomach, food is mixed with gastric juices, which include hydrochloric acid and enzymes. This mixture turns the food into a semi-digested liquid called chyme.

4. **Locating the Stomach**: The question asks for the location of the stomach within the body cavity. In frogs, the stomach is situated on the left side of the body cavity.

5. **Conclusion**: Therefore, the correct answer to the question is that the broad, thick-walled tube (the stomach) lies on the left side of the body cavity.

### Final Answer:
The broad, thick-walled tube of the frog in which chyme is formed lies on the **left side** of the body cavity.

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