Question

Ptyalin enzyme is secreted by

• A. Salivary gland
• B. Mouth
• C. Oesophagus
• D. Stomach

Answer 1

The correct option is A

Salivary gland

The correct option is A.

Explanation for the correct option:

1. Ptyalin enzyme is also referred to as salivary amylase.
2. This enzyme helps in breaking down complex sugars into simpler ones.
3. As it is a salivary enzyme it is secreted by salivary glands.
4. And by the time it reaches the stomach, due to the acidic environment in the stomach it loses its activity.

Explanation for the incorrect options:

Option B:

1. The mouth itself is not a gland.
2. But it serves as a location for salivary glands.
3. Hence it is not secreting any kind of enzymes directly.

Option C:

1. Oesophagus is a kind of tube that connects the mouth with the stomach.
2. It provides a path for food to reach the stomach.
3. As it is also not a gland it is not secreting any kind of enzymes.

Option D:

1. The enzyme pepsin is secreted by the stomach.
2. It helps in the digestion of protein.
3. The low pH inside the stomach leads to the activation of the enzyme pepsin.

Final answer:

Ptyalin enzyme is secreted by Salivary gland.