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 is bounded by a pair of lips

Answer

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

### Step 1: Analyze Option A
- **Statement**: The body color offers it protective coloration.
- **Explanation**: Frogs can change their color to blend into their environment, which helps them avoid predators. This ability is a form of camouflage, not mimicry, but the statement is fundamentally true regarding their protective coloration.
- **Conclusion**: This statement is true.

### Step 2: Analyze Option B
- **Statement**: The summer sleep of frog is known as estivation.
- **Explanation**: Estivation is a state of dormancy that occurs in response to high temperatures and arid conditions. Frogs do enter a state of estivation during hot, dry periods to conserve moisture and energy.
- **Conclusion**: This statement is true.

### Step 3: Analyze Option C
- **Statement**: A tail is present in the life cycle of a frog.
- **Explanation**: Frog larvae, commonly known as tadpoles, possess tails that they use for swimming. As they mature into adult frogs, they lose their tails.
- **Conclusion**: This statement is true.

### Step 4: Analyze Option D
- **Statement**: The mouth is bounded by a pair of lips.
- **Explanation**: Frogs do not have true lips like many other animals. Instead, their mouth is more of a rounded opening without distinct lips.
- **Conclusion**: This statement is false.

### Final Answer
Based on the analysis, the statement that is not true is **Option D**: "The mouth is bounded by a pair of lips."

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