The gastric glands present in the wall of the stomach release:
The gastric glands present in the wall of the stomach release:
Options
(C) Mucus and Pepsin
Hint
Recall the three secretions of gastric glands and note which of the given options match two of them.
Analysis & Explanation
As stated in the chapter, 'The digestion in stomach is taken care of by the gastric glands present in the wall of the stomach. These release hydrochloric acid, a protein digesting enzyme called pepsin, and mucus.' So among the given options, the gastric glands release mucus and pepsin (option C is correct), along with HCl which is not listed as an option here.
Why the distractors are wrong:
- (A) Mucus and Trypsin — Trypsin is a protein-digesting enzyme secreted by the pancreas (as pancreatic juice) that acts in the small intestine, not by the gastric glands of the stomach.
- (B) Pepsin and Trypsin — Pepsin is correctly a gastric gland secretion, but Trypsin is a pancreatic enzyme active in the small intestine, not the stomach.
- (D) Pepsin and Salivary amylase — Pepsin is correct, but salivary amylase is secreted by the salivary glands in the mouth (it converts starch to simple sugar) and does not function in the stomach; in fact, the acidic medium of the stomach stops its action.
Common Mistakes
- 1Confusing pepsin (stomach enzyme) with trypsin (pancreatic enzyme acting in the small intestine).
- 2Thinking salivary amylase continues to act in the stomach — actually the acidic pH of the stomach denatures/inactivates it.
Interesting Facts
Pepsin is secreted as an inactive precursor called pepsinogen, which is converted to active pepsin by the hydrochloric acid in the stomach — this prevents the enzyme from digesting the stomach's own proteins prematurely.
The mucus secreted by gastric glands forms a protective lining that shields the stomach wall from the highly acidic HCl and from pepsin itself; breakdown of this protection is linked to gastric ulcers and the sensation adults describe as 'acidity.'
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Frequently Asked Questions
How many marks does this question carry in CBSE Class 10 Science 2025?
This question carries 1 mark in the CBSE Class 10 Science 2025 examination.
Which chapter does this question come from in Science?
This question is from the chapter "Life Processes" in the CBSE Class 10 Science syllabus.
What topic does this question cover in Science?
This question covers the topic "Nutrition in Human Beings — Digestion in the Stomach" from CBSE Class 10 Science.
What type of question is this in the CBSE Class 10 Science 2025 paper?
This is a MCQ question from Section A in the CBSE Class 10 Science 2025 paper.