Which of the following statements is not true?

Options

A. The body colour offers it protective colouration
B. Summer sleep of frog is called aestivation
C. Tail is present in the lifecycle of frog
D. Mouth of frog is bounded by a pair of lips

Explanation

To determine which statement about frogs is not true, we will analyze each statement provided in the question step by step.

### Step-by-Step Solution:

1. **Statement Analysis**:
- **Statement 1**: "The body color operates the protective coloration."
- Frogs can change their color for camouflage, which helps them escape from predators. This statement is true.

2. **Statement Analysis**:
- **Statement 2**: "The summer sleep of the frog is called estivation."
- Frogs do enter a state of dormancy during the summer, known as estivation, to avoid heat and conserve moisture. This statement is also true.

3. **Statement Analysis**:
- **Statement 3**: "The tail is present in the life cycle of the frog."
- Frogs have a tail during their larval stage (tadpole stage), which is lost as they mature into adults. This statement is correct.

4. **Statement Analysis**:
- **Statement 4**: "The mouth of the frog is bounded by a pair of lips."
- Frogs do not have fleshy lips surrounding their mouths as many other animals do. Instead, their mouths are more of a simple opening without distinct lips. This statement is incorrect.

### Conclusion:
The statement that is not true is: **"The mouth of the frog is bounded by a pair of lips."**

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