Which Statement among the following are CORRECT ?
I. The upper surface of the tongue has small projections called papillae, some of which bear taste buds.
II. The serosa is the innermost layer of the alimentary canal and is made up of a thin mesothelium ( epithelium of visceral organs ) with some connective tissue .
III. The live is the largest glands of the body weighing about 4.3 to 5 kg in an adult human.
IV. During the process of digestion, the stomach stores the food for 2 - 3 hours.

Options

A. I and III
B. II and IV
C. I and IV
D. II and III

Answer

To determine which statements among the given options are correct, we will analyze each statement one by one.

### Step 1: Analyze Statement I
**Statement I:** The upper surface of the tongue has small projections called papillae, some of which bear taste buds.

- **Analysis:** This statement is correct. The tongue has small projections known as papillae, and some of these papillae contain taste buds, which are responsible for the sense of taste.

### Step 2: Analyze Statement II
**Statement II:** The serosa is the innermost layer of the alimentary canal and is made up of a thin mesothelium (epithelium of visceral organs) with some connective tissue.

- **Analysis:** This statement is incorrect. The innermost layer of the alimentary canal is called the mucosa, not the serosa. The serosa is actually the outermost layer of the alimentary canal.

### Step 3: Analyze Statement III
**Statement III:** The liver is the largest gland of the body weighing about 4.3 to 5 kg in an adult human.

- **Analysis:** This statement is incorrect. While the liver is indeed the largest gland in the body, its weight is approximately 1.2 to 1.5 kg in an adult human, not 4.3 to 5 kg.

### Step 4: Analyze Statement IV
**Statement IV:** During the process of digestion, the stomach stores the food for 2 - 3 hours.

- **Analysis:** This statement is correct. The stomach does store food for about 2 to 3 hours during the digestion process, allowing for the breakdown of food before it moves into the small intestine.

### Conclusion
Based on the analysis:
- Statement I is correct.
- Statement II is incorrect.
- Statement III is incorrect.
- Statement IV is correct.

Thus, the correct statements are I and IV.

### Final Answer
The correct answer is that Statements I and IV are correct.