Identify the vertebrate group of animals characterized by crop and gizzard in its digestive system

Options

A. Osteichthyes
B. Aves
C. Reptilia
D. Amphibia

Answer

To solve the question of identifying the vertebrate group of animals characterized by a crop and gizzard in their digestive system, we will follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for a specific vertebrate group that has a crop and gizzard in their digestive system.

2. **Identify the Options**: The options provided are:
- Osteichthyes (Osteopetes)
- Aves
- Reptilia
- Amphibia

3. **Analyze Each Option**:
- **Osteichthyes (Osteopetes)**: This group includes bony fish. They do not have a crop and gizzard in their digestive system.
- **Aves**: Birds belong to this group. They are known to have a crop (for storing food) and a gizzard (for grinding food).
- **Reptilia**: Reptiles do not possess a crop and gizzard in their digestive system.
- **Amphibia**: Amphibians also do not have a crop and gizzard.

4. **Eliminate Incorrect Options**: Based on the analysis:
- Osteichthyes is eliminated because they lack a crop and gizzard.
- Reptilia is eliminated for the same reason.
- Amphibia is also eliminated as they do not have these structures.

5. **Select the Correct Answer**: The only group that has both a crop and gizzard is Aves (birds).

### Final Answer:
The vertebrate group characterized by a crop and gizzard in its digestive system is **Aves**.

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