Consider the following statements.
I. Deer is a dioestrus animal.
II. Mouse is a monooestrus animal.
III. Dog Is a polyoestrus animal.
IV. Mammals are seasonal breeders.
Choose the correct codes.

Options

A. I, II and III
B. II, III and IV
C. I, II and IV
D. All are incorrect

Answer

To analyze the statements regarding the reproductive cycles of different animals, let's evaluate each statement one by one:

### Step-by-Step Solution:

1. **Statement I: Deer is a dioestrus animal.**
- **Analysis:** Dioestrus animals typically have two breeding seasons per year. However, deer are classified as polyestrous animals, meaning they can breed multiple times throughout the year. Therefore, this statement is **incorrect**.

2. **Statement II: Mouse is a monoestrus animal.**
- **Analysis:** Monoestrus animals have one breeding season per year. Mice, on the other hand, are known to be polyestrous, meaning they can breed several times throughout the year. Thus, this statement is also **incorrect**.

3. **Statement III: Dog is a polyestrus animal.**
- **Analysis:** Dogs do not have multiple breeding seasons throughout the year; they typically have one breeding season (estrus) per year. Therefore, dogs are classified as monoestrous, making this statement **incorrect**.

4. **Statement IV: Mammals are seasonal breeders.**
- **Analysis:** While some mammals are seasonal breeders, not all mammals fall into this category. For example, humans can reproduce at any time of the year. Therefore, this statement is also **incorrect**.

### Conclusion:
Based on the analysis of all four statements:
- All statements (I, II, III, and IV) are incorrect.

### Final Answer:
The correct code is **None of the statements are correct**.

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