Which of the following is not a connective tissue ?

Options

A. Bone
B. Cartilage
C. Blood
D. Muscles

Answer

To solve the question "Which of the following is not a connective tissue?" we will follow these steps:

### Step 1: Understand the Types of Animal Tissues
Animal tissues are classified into four main types:
1. Epithelial tissue
2. Muscular tissue
3. Connective tissue
4. Nervous tissue

### Step 2: Identify the Given Options
The options provided in the question are:
- Bone
- Cartilage
- Blood
- Muscles

### Step 3: Classify Each Option
Now, we will classify each of the options into their respective tissue types:
- **Bone**: This is classified as a connective tissue. It provides support and structure to the body.
- **Cartilage**: This is also classified as a connective tissue. It provides flexibility and support in various parts of the body.
- **Blood**: Blood is classified as a connective tissue as well. It transports nutrients, gases, and waste products throughout the body.
- **Muscles**: Muscles are classified as muscular tissue. They are responsible for movement and are not considered connective tissue.

### Step 4: Determine the Answer
From the classification:
- Bone, cartilage, and blood are all connective tissues.
- Muscles are not a connective tissue.

Thus, the answer to the question "Which of the following is not a connective tissue?" is **Muscles**.

### Final Answer
Muscles are not a connective tissue.

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