The rat in North American deserts is capable of meeting all its water requirements through its internal fat oxidation . It is an example of

Options

A. Morphological adaptation
B. Behavioral adaptation
C. Anatomical adaptation
D. Physiological adaptation

Answer

To solve the question regarding the rat in North American deserts that meets its water requirements through internal fat oxidation, we can follow these steps:

### Step 1: Understand the Context
The question describes a rat living in a desert environment that can fulfill its water needs through a specific internal process. This indicates that the rat has adapted to survive in an environment where water is scarce.

**Hint:** Look for clues in the environment and the method of water acquisition.

### Step 2: Identify the Type of Adaptation
We need to determine what kind of adaptation this represents. The options provided are:
- a) Morphological adaptation
- b) Behavioral adaptation
- c) Anatomical adaptation
- d) Physiological adaptation

**Hint:** Consider whether the adaptation is related to physical structure, behavior, internal processes, or anatomy.

### Step 3: Analyze the Adaptation
The rat's ability to oxidize fat to produce water is an internal biochemical process. This means it is not about the structure of the rat (morphological or anatomical) or its behavior (behavioral adaptation), but rather how its body functions internally to maintain homeostasis in a challenging environment.

**Hint:** Focus on the internal processes that help the organism survive.

### Step 4: Define Physiological Adaptation
Physiological adaptations involve internal processes that help organisms maintain stable internal conditions (homeostasis). In this case, the rat is using fat oxidation to create water, which is crucial for survival in a desert.

**Hint:** Remember that physiological adaptations are often about how organisms manage their internal environment.

### Step 5: Conclusion
Based on the analysis, the rat's ability to meet its water needs through fat oxidation is an example of a physiological adaptation.

**Final Answer:** The correct answer is **d) physiological adaptation**.