A new born baby has the cold-resisting device due to

Options

A. Brown fat
B. Adipose fat
C. Fat rich in reticular tissue
D. None of these

Answer

**Step-by-Step Solution:**

1. **Understanding the Question:**
The question asks why a newborn baby has a cold-resisting device. We need to identify the specific type of fat that provides this ability.

2. **Types of Connective Tissue:**
Connective tissues are classified into two main categories: loose connective tissue and dense connective tissue. Loose connective tissue includes areolar and adipose tissue.

3. **Focus on Adipose Tissue:**
Adipose tissue is primarily responsible for fat storage. It is divided into two types: white adipose tissue and brown adipose tissue.

4. **Characteristics of White and Brown Fat:**
- **White Adipose Tissue:** This type of fat is commonly found in adults and serves primarily as an energy reserve.
- **Brown Adipose Tissue:** This type is primarily found in newborns and is specialized for thermogenesis, which means it helps generate heat to maintain body temperature.

5. **Function of Brown Fat:**
Brown fat contains numerous mitochondria that enable it to produce heat. This is particularly important for newborns, as they are more susceptible to cold temperatures. The presence of brown fat allows them to resist cold conditions effectively.

6. **Conclusion:**
Since brown fat is the specific type of adipose tissue that provides cold resistance in newborns, the correct answer to the question is **Option A: Brown Fat**.

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