Which of the following statement 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 life cycle of frog
D. Mouth is bounded by a pair of lips

Explanation

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

### Step 1: Analyze the first statement
**Statement:** The body color offers it protective coloration.
**Analysis:** Frogs can change their body color for camouflage, which helps them avoid predators. This property is indeed true and is a form of protective coloration.
**Conclusion:** This statement is true.

### Step 2: Analyze the second statement
**Statement:** Summer sleep of frog is called Astivation.
**Analysis:** Frogs enter a state of dormancy during extreme summer conditions, which is known as aestivation. This is a true statement.
**Conclusion:** This statement is true.

### Step 3: Analyze the third statement
**Statement:** Tail is present in the life cycle of frog.
**Analysis:** Frogs have tails during their larval stage (tadpole stage). However, they lose their tails as they mature into adults. The statement is misleading because it implies that a tail is present throughout the entire life cycle, which is not the case.
**Conclusion:** This statement is partially true but can be considered misleading.

### Step 4: Analyze the fourth statement
**Statement:** Mouth is bounded by the pair of lips.
**Analysis:** Frogs do not have a pair of lips like mammals. Instead, their mouths are more of a simple opening without distinct lips. Therefore, this statement is incorrect.
**Conclusion:** This statement is not true.

### Final Conclusion
The statement that is not true is: **"Mouth is bounded by the pair of lips."**