Title: Digestive System MCQs | Class 11 Biology | NEET Practice Questions
The digestive system is a crucial topic in Class 11 Biology and is frequently asked in NEET and other competitive exams. Below are 40+ most important multiple-choice questions (MCQs) on Digestive System MCQ for NEET and Class 11, carefully selected for exam preparation.
Top 40+ Digestive System MCQ for NEET and Class 11
Basic Functions and Organs of Digestive System
- Which of the following is NOT a function of the digestive system?
A) Ingest food
B) Eliminate nitrogenous wastes
C) Absorb nutrients
D) Break down food into absorbable molecules
Answer: B) Eliminate nitrogenous wastes - The rhythmic contractions that move food through the digestive tract are called:
A) Mastication
B) Peristalsis
C) Segmentation
D) Dilation
Answer: B) Peristalsis - Which organ is primarily responsible for nutrient absorption?
A) Stomach
B) Small intestine
C) Large intestine
D) Esophagus
Answer: B) Small intestine - Saliva contains the enzyme:
A) Pepsin
B) Amylase
C) Lipase
D) Trypsin
Answer: B) Amylase - Which part of the digestive system is responsible for water absorption?
A) Small intestine
B) Stomach
C) Large intestine
D) Esophagus
Answer: C) Large intestine - The liver produces:
A) Insulin
B) Bile
C) Saliva
D) Gastrin
Answer: B) Bile - Which of the following is an accessory organ of digestion?
A) Esophagus
B) Pancreas
C) Large intestine
D) Stomach
Answer: B) Pancreas
Digestive System MCQ for NEET and Class 11 - The enzyme pepsin is active in the:
A) Mouth
B) Stomach
C) Small intestine
D) Large intestine
Answer: B) Stomach - The primary function of the gallbladder is to:
A) Produce bile
B) Store bile
C) Secrete insulin
D) Absorb nutrients
Answer: B) Store bile - Which structure prevents food from entering the trachea?
A) Uvula
B) Epiglottis
C) Soft palate
D) Pharynx
Answer: B) Epiglottis
Digestive System MCQ for NEET and Class 11
Digestion and Enzymes
- The process of chewing is known as:
Answer: B) Mastication - Which organ produces insulin?
Answer: B) Pancreas - The finger-like projections in the small intestine are called:
Answer: B) Villi - Which part of the digestive system connects the mouth to the stomach?
Answer: B) Esophagus - The acidic mixture of partially digested food in the stomach is called:
Answer: B) Chyme - Which vitamin is synthesized by bacteria in the large intestine?
Answer: D) Vitamin K - The first part of the small intestine is the:
Answer: C) Duodenum - Which of the following is NOT a layer of the gastrointestinal tract?
Answer: D) Epidermis - The hormone that stimulates the release of gastric juice is:
Answer: B) Gastrin - Which enzyme breaks down proteins in the stomach?
Answer: C) Pepsin
Anatomy of Digestive Tract
- Which of the following is NOT a function of the digestive system?
Answer: D) Filtration - The uvula is a part of the:
Answer: C) Palate - The majority tissue type in the tongue is:
Answer: C) Skeletal muscle - Salivary gland located near the ear:
Answer: A) Parotid - Which is NOT a function of saliva?
Answer: D) Begins digestion of protein - Define gingivitis:
Answer: B) Inflammation of the gums - How many teeth are in a full deciduous set?
Answer: A) 20 - Three sets of salivary glands are:
Answer: A) Parotid, sublingual, and submandibular - Primary components of saliva:
Answer: D) Mucous and water - Function of amylase:
Answer: B) Aids in the digestion of carbohydrates
Advanced Digestive Physiology
- Which part of the pharynx is NOT for food passage?
Answer: A) Nasopharynx - Structure that closes the nasopharynx during swallowing:
Answer: C) Uvula - Chewed food + saliva mixture is called:
Answer: A) Bolus - Structure that covers the larynx during swallowing:
Answer: D) Epiglottis - Innermost tissue layer of the GI tract:
Answer: C) Mucosa - Correct order of digestive wall layers (deep to superficial):
Answer: B) Mucosa, submucosa, muscularis, and serosa - Typical muscle type in GI tract muscularis layer:
Answer: B) 2; smooth - Folds in the mucosa of the stomach:
Answer: B) Rugae - Four stomach regions:
Answer: B) Body, cardiac, fundic, and pyloric - Correctly matched gastric secretory cell:
Answer: B) Parietal cells – hydrochloric acid and intrinsic factor
Conclusion
These Digestive System MCQ for NEET and Class 11 are ideal for quick revision before exams. Practice these regularly to strengthen your concepts. Don’t forget to bookmark this page for future reference.
Molecular Basis of Inheritance
FAQs Digestive System MCQ for NEET and Class 11
1. What is the function of the digestive system?
The digestive system helps in breaking down food, absorbing nutrients, and eliminating waste products.
2. Which part of the digestive system absorbs most nutrients?
The small intestine is primarily responsible for absorbing nutrients.
3. What is peristalsis in digestion?
Peristalsis is the wave-like muscle contraction that moves food through the digestive tract.
4. Which enzyme starts the digestion of carbohydrates?
Amylase, found in saliva, begins carbohydrate digestion in the mouth.
5. Where is bile produced and stored?
Bile is produced by the liver and stored in the gallbladder.
6. What is chyme?
Chyme is the semi-liquid mass of partially digested food formed in the stomach.
7. What is the function of the large intestine?
The large intestine absorbs water and forms solid waste (feces).
8. Which organ produces insulin?
The pancreas produces insulin as well as digestive enzymes.
9. What are villi and their role?
Villi are finger-like projections in the small intestine that increase surface area for nutrient absorption.
10. What is the role of the epiglottis?
The epiglottis prevents food from entering the windpipe during swallowing.
11. Which enzyme digests proteins in the stomach?
Pepsin is responsible for breaking down proteins in the stomach.
12. What is the function of the pancreas in digestion?
The pancreas secretes enzymes like trypsin, lipase, and amylase into the small intestine.
13. How many teeth are present in a complete set of baby teeth?
There are 20 deciduous (baby) teeth in children.
14. What is mastication?
Mastication is the process of chewing food to break it into smaller pieces.
15. What is gastrin?
Gastrin is a hormone that stimulates the secretion of gastric juice in the stomach.
16. Which vitamin is produced in the large intestine?
Vitamin K is synthesized by bacteria in the large intestine.
17. What are rugae?
Rugae are folds in the stomach lining that allow it to expand when food enters.
18. What is bolus?
Bolus is a soft mass of chewed food ready to be swallowed.
19. Which part of the pharynx is not involved in food passage?
Nasopharynx is not part of the digestive food passage.
20. Why are MCQs important for NEET biology preparation?
MCQs help students practice concept-based questions and improve time management and accuracy in exams like NEET.