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 liver 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.
(a) I and III
(b) II and IV
(c) I and IV
(d) II and III

Options

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

Answer

To determine which statements are correct, let's 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 many of these papillae contain taste buds that are responsible for detecting different tastes.

### 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 serosa is actually the outermost layer of the alimentary canal, not the innermost. It is composed of a thin layer of mesothelium and connective tissue, but its position as the outermost layer makes the statement false.

### 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 also incorrect. While the liver is indeed the largest gland in the body, it does not weigh 4.3 to 5 kg; it typically weighs around 1.2 to 1.5 kg in adults.

### 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 a period of about 2 to 3 hours during the digestion process.

### Conclusion
After analyzing all four statements:
- **Correct Statements:** I and IV
- **Incorrect Statements:** II and III

Thus, the correct answer is **(c) I and IV**.