Which is false

Options

A. Oesophagus secretes digestive enzyme
B. Gall bladder is absent in Horse
C. Human teeth are thecodont
D. There are three pairs of salivary glands in humans

Answer

To determine which statement is false, we will analyze each statement one by one.

### Step 1: Analyze the first statement
**Statement:** "Esophagus secretes digestive enzyme."

- The esophagus does not secrete any digestive enzymes. Its primary function is to transport food from the mouth to the stomach. It does produce mucus for lubrication but does not produce digestive enzymes.
- **Conclusion:** This statement is false.

### Step 2: Analyze the second statement
**Statement:** "Gallbladder is absent in horse."

- Horses do not have a gallbladder. Instead, they continuously produce bile, which is released directly into the small intestine. The gallbladder typically stores bile in other animals, but in horses, bile is released continuously.
- **Conclusion:** This statement is true.

### Step 3: Analyze the third statement
**Statement:** "Human teeth are thicodont."

- Human teeth are classified as diphyodont (having two sets of teeth) and thecodont (teeth embedded in sockets). Therefore, the statement that human teeth are thicodont is correct.
- **Conclusion:** This statement is true.

### Step 4: Analyze the fourth statement
**Statement:** "There are three pairs of salivary glands in humans."

- Humans indeed have three pairs of major salivary glands: the parotid, submandibular, and sublingual glands.
- **Conclusion:** This statement is true.

### Final Conclusion
The only false statement among the options provided is that the "esophagus secretes digestive enzyme."