Select the true statement regarding frog (Rana tigrina):-

Options

A. Frog is a homoethermal animal
B. Frog drinks about 5 litres of `H_(2)O` per day.
C. poisonous glands are not found on the body of frog.
D. A very long tail is present part of frog's body.

Answer

To determine the true statement regarding the frog (Rana tigrina), we will evaluate each of the provided options step by step.

### Step-by-Step Solution:

1. **Evaluate Option 1: Frog is a homeothermal animal.**
- Frogs are classified as amphibians, and amphibians are known to be poikilothermic (cold-blooded) animals. This means they cannot regulate their internal body temperature independently of the environment.
- **Conclusion:** This statement is **incorrect**.

2. **Evaluate Option 2: Frog drinks about 5 liters of water per day.**
- Frogs do not drink water in the same way that mammals do. Instead, they absorb water through their skin. Therefore, the claim that a frog drinks 5 liters of water per day is misleading.
- **Conclusion:** This statement is **incorrect**.

3. **Evaluate Option 3: Poisonous glands are not found on the body of a frog.**
- Frogs do not possess poisonous glands on their bodies. In contrast, toads, which are also amphibians, do have poison glands. This makes the statement true regarding frogs.
- **Conclusion:** This statement is **correct**.

4. **Evaluate Option 4: A very long tail is present on a frog's body.**
- Frogs belong to the order Anura, which is characterized by the absence of a tail in adult forms. While tadpoles (the larval stage of frogs) do have tails, adult frogs do not.
- **Conclusion:** This statement is **incorrect**.

### Final Answer:
The true statement regarding the frog (Rana tigrina) is: **Poisonous glands are not found on the body of the frog.**

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