Choose the correct statement

Options

A. The organic content of bone is higher than inorganic content
B. Tendon is elastic in nature
C. Hyaline cartilage is glass-like and opaque
D. Brown fat cannot be used as a substitute of food

Answer

To solve the question of choosing the correct statement, we need to analyze each option provided. Here’s a step-by-step breakdown:

### Step 1: Analyze the First Statement
**Statement:** Organic content of bone is higher than the inorganic content.

**Analysis:**
- Bones are composed of both organic and inorganic materials.
- The inorganic component primarily consists of calcium and phosphorus salts, which make up a significant portion of bone mass.
- The organic component includes collagen and other proteins, but it is less than the inorganic component.

**Conclusion:** This statement is incorrect.

### Step 2: Analyze the Second Statement
**Statement:** Tendon is elastic in nature.

**Analysis:**
- Tendons are dense connective tissues that connect muscles to bones.
- They are primarily composed of collagen fibers, which provide strength but limited elasticity.
- Tendons are not highly elastic; they are more rigid compared to other connective tissues like ligaments.

**Conclusion:** This statement is also incorrect.

### Step 3: Analyze the Third Statement
**Statement:** Hyaline cartilage is glass-like and opaque.

**Analysis:**
- Hyaline cartilage is a type of specialized connective tissue.
- It is actually translucent and has a glassy appearance, not opaque.
- It is found in various parts of the body, including joints and the rib cage.

**Conclusion:** This statement is incorrect.

### Step 4: Analyze the Fourth Statement
**Statement:** Brown fat cannot be used as a substitute for food.

**Analysis:**
- Brown fat is a type of adipose tissue that is involved in thermogenesis (heat production).
- It contains a high number of mitochondria and is metabolically active, breaking down fat for energy.
- However, it cannot be consumed or used as a substitute for food; it serves a different physiological role.

**Conclusion:** This statement is correct.

### Final Answer
The correct statement is: **D. Brown fat cannot be used as a substitute for food.**

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