The main difference between white and yellow fibre is of

Options

A. Protein
B. Colour of fibre
C. Both 1 & 2
D. None of the above

Answer

**Step-by-Step Solution:**

1. **Identify the Types of Fibers**: The question asks about the main difference between white and yellow fibers. First, we need to understand what these fibers are.

2. **Composition of White Fibers**: White fibers are primarily made up of collagen protein. This gives them strength and support.

3. **Characteristics of White Fibers**: They have a shiny texture and are responsible for connecting different parts of the body, providing structural support.

4. **Composition of Yellow Fibers**: Yellow fibers, on the other hand, are made up of elastin protein. This composition allows them to be more flexible.

5. **Characteristics of Yellow Fibers**: Yellow fibers are known for their ability to stretch and relax, which is essential for the functioning of various organs.

6. **Summarize the Differences**: The main differences can be summarized as follows:
- White fibers contain collagen protein and are white in color.
- Yellow fibers contain elastin protein and are yellow in color.

7. **Select the Correct Option**: Based on the differences identified, the correct answer to the question is that the main difference between white and yellow fibers is both the type of protein they are made from and their color. Therefore, the correct option is "both 1 and 2".

**Final Answer**: The main difference between white and yellow fibers is both the type of protein (collagen in white fibers and elastin in yellow fibers) and their color. Thus, the answer is option 3: both 1 and 2.

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