An animal having both exoskeleton and endoskeleton is

Options

A. Fresh water Mussel
B. Frog
C. Tortoise
D. Jelly Fish

Answer

To determine which animal has both an exoskeleton and an endoskeleton, we can follow these steps:

### Step 1: Understand the Definitions
- **Exoskeleton**: A hard outer structure that provides support and protection to an animal, commonly found in arthropods (like insects and crustaceans).
- **Endoskeleton**: An internal skeleton that provides support and structure to an animal, commonly found in vertebrates (like mammals, birds, reptiles, etc.).

### Step 2: Analyze the Options
- **Freshwater Mussel**: This is a bivalve mollusk that has an exoskeleton (the shell) but does not have an endoskeleton.
- **Frog**: Frogs are amphibians with an endoskeleton but lack an exoskeleton.
- **Tortoise**: Tortoises are reptiles that have an endoskeleton (bones) and an exoskeleton (the hard shell).
- **Jellyfish**: Jellyfish do not have either an exoskeleton or an endoskeleton; they have a gelatinous body.

### Step 3: Identify the Correct Answer
From the analysis, the only animal that possesses both an exoskeleton and an endoskeleton is the **tortoise**. The tortoise has a hard shell (exoskeleton) and an internal skeletal structure (endoskeleton).

### Conclusion
The animal that has both an exoskeleton and an endoskeleton is the **tortoise**.

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