A neopallium or cerebral cortex is not found in the brain of :

Options

A. Mammals
B. Birds
C. Reptiles
D. Frogs

Answer

To solve the question, "A neopallium or cerebral cortex is not found in the brain of:", we need to analyze the options provided and identify which organism does not possess a neopallium or cerebral cortex.

### Step-by-Step Solution:

1. **Understand the Neopallium/Cerebral Cortex**:
- The neopallium, also known as the cerebral cortex, is a part of the brain involved in higher-order functions such as sensory perception, motor commands, spatial reasoning, and language.

2. **Evaluate the Options**:
- **Option 1: Mammals**:
- Mammals possess a well-developed cerebral cortex. Therefore, this option is incorrect.

- **Option 2: Birds**:
- Birds also have a structure analogous to the cerebral cortex, which is involved in complex behaviors. Thus, this option is incorrect.

- **Option 3: Reptiles**:
- Reptiles have a primitive form of the cerebral cortex, which allows them to perform basic sensory and motor functions. Hence, this option is incorrect.

- **Option 4: Frogs**:
- Frogs, being amphibians, do not have a neopallium or a cerebral cortex. Instead, they have a simpler brain structure. Therefore, this option is correct.

3. **Conclusion**:
- The organism that does not have a neopallium or cerebral cortex is the frog. Thus, the correct answer is **Option 4: Frog**.

### Final Answer:
The neopallium or cerebral cortex is not found in the brain of frogs.

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