Which of the following statements is/are incorrect regarding connective tissues?
(i) They are the most abundant and widely distributed in the body of complex animals.
(ii) They connect and support other tissues.
(iii) They include diverse tissues such as bones, cartilage, tendons, adipose and other loose connective tissues.
(iv) They form the intemal and external lining of many organs.

Options

A. (iv) only
B. (ii) only
C. (i) and (ii) only
D. (iii) and (iv) only

Answer

To determine which statement(s) regarding connective tissues are incorrect, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Analyze Statement (i)**:
- Statement: "They are the most abundant and widely distributed in the body of complex animals."
- Evaluation: This statement is true. Connective tissues are indeed the most abundant and widely distributed tissues in complex animals, serving various functions throughout the body.

**Hint**: Think about the role and prevalence of connective tissues in the body.

2. **Analyze Statement (ii)**:
- Statement: "They connect and support other tissues."
- Evaluation: This statement is also true. The primary function of connective tissues is to connect and support other tissues, providing structural integrity and support.

**Hint**: Consider the main functions of connective tissues in relation to other tissue types.

3. **Analyze Statement (iii)**:
- Statement: "They include diverse tissues such as bones, cartilage, tendons, adipose and other loose connective tissues."
- Evaluation: This statement is true. Connective tissues encompass a variety of types, including bones, cartilage, tendons, and adipose tissues, which all fall under the category of connective tissues.

**Hint**: Recall the different types of connective tissues and their examples.

4. **Analyze Statement (iv)**:
- Statement: "They form the internal and external lining of many organs."
- Evaluation: This statement is incorrect. While connective tissues provide support and structure, they do not form the linings of organs. The lining of organs is typically formed by epithelial tissues, not connective tissues.

**Hint**: Differentiate between the roles of connective tissues and epithelial tissues in the body.

### Conclusion:
After analyzing all the statements, we find that only statement (iv) is incorrect regarding connective tissues.

**Final Answer**: Only statement (iv) is incorrect.