Which of the following options is correct ?

Options

A. `{:("Homiothermic organism","Poikilothermic organism"),("Man","Cow"):}`
B. `{:("Homiothermic organism","Poikilothermic organism"),("Cockroach","Man"):}`
C. `{:("Homiothermic organism","Poikilothermic organism"),("Lizard","Frog"):}`
D. `{:("Homiothermic organism","Poikilothermic organism"),("Cow","Frog"):}`

Answer

To solve the question regarding the correct classification of organisms as homeothermic or poikilothermic, we will follow these steps:

### Step 1: Understand the Definitions
- **Homeothermic organisms** are those that can maintain a constant internal body temperature regardless of external environmental conditions. Examples include mammals and birds.
- **Poikilothermic organisms** cannot regulate their body temperature internally and their body temperature varies with the environment. Examples include reptiles, amphibians, and fish.

### Step 2: Analyze Each Option
- **Option A**: Man (homeothermic) and Cow (poikilothermic)
- Man is correctly classified as homeothermic, but Cow is also a mammal and should be classified as homeothermic. Therefore, this option is incorrect.

- **Option B**: Cockroach (homeothermic) and Man (poikilothermic)
- Cockroaches are not homeothermic; they are poikilothermic. Man is homeothermic. This option is incorrect.

- **Option C**: Lizard (homeothermic) and Frog (poikilothermic)
- Lizards are poikilothermic, not homeothermic. Frogs are correctly classified as poikilothermic. This option is incorrect.

- **Option D**: Cow (homeothermic) and Frog (poikilothermic)
- Cow is a mammal and is correctly classified as homeothermic. Frog is an amphibian and is correctly classified as poikilothermic. This option is correct.

### Step 3: Conclusion
The correct answer is **Option D**, where both examples are correctly classified based on their ability to maintain homeostasis.

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