Carapace is present in

Options

A. Toad
B. Frog
C. Bird
D. Tortoise

Answer

### Step-by-Step Solution:

1. **Understanding the term "Carapace":**
- A carapace is defined as the dorsal (upper) portion of the skeleton or exoskeleton found in various animal groups. It serves as a protective covering.

2. **Distinguishing between skeleton and exoskeleton:**
- An exoskeleton is an external skeleton that provides support and protection to the body, while an internal skeleton is found within the body. The carapace is part of the exoskeleton in certain animals.

3. **Identifying animals with a carapace:**
- Carapaces are found in both vertebrates (animals with a backbone) and invertebrates (animals without a backbone).

4. **Analyzing the options:**
- **Toad:** Toads are amphibians and do not possess a carapace.
- **Frog:** Frogs are also amphibians and similarly lack a carapace.
- **Bird:** Birds have feathers and wings but do not have a carapace.
- **Tortoise:** Tortoises are reptiles and possess a carapace, which is also referred to as a shell. The upper part of the shell is the carapace, while the lower part is called the plastron.

5. **Conclusion:**
- Based on the analysis, the only animal from the options given that has a carapace is the tortoise.

### Final Answer:
Carapace is present in **Tortoise**.

---