Digestive & Respiratory System MCQ Quiz – Part 2
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This Digestive & Respiratory System MCQ Quiz helps aspirants revise important concepts related to the structure and functions of the human digestive and respiratory systems, which are frequently asked in competitive exams. Regular practice of these MCQs improves conceptual understanding and helps candidates answer biology questions quickly and accurately.
GK Series – Biology – Digestive & Respiratory System MCQ Quiz |
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| Subject | Biology |
| Chapter | Digestive & Respiratory System |
| Part | 2 |
| Questions | 25 |
Who Should Attempt This Digestive & Respiratory System MCQ Quiz?
This Digestive & Respiratory System MCQ Quiz is useful for aspirants preparing for SSC, Railways, Banking, Defence, and other government job exams, where basic biology questions are commonly asked in the General Knowledge section.
Topics Covered in This Digestive & Respiratory System MCQ Quiz
This quiz includes MCQs based on important topics such as organs of the digestive system, digestion and absorption of food, structure and functions of the respiratory system, breathing mechanism, and gas exchange, along with other fundamental concepts related to human digestion and respiration.
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Question 1 of 25
1. Question
Bile helps in digestion mainly by
Correct
➤ Bile breaks large fat globules into smaller droplets.
➤ This process is called emulsification of fats.Incorrect
➤ Bile breaks large fat globules into smaller droplets.
➤ This process is called emulsification of fats. -
Question 2 of 25
2. Question
The process of breaking large fat globules into smaller ones is called
Correct
➤ Emulsification is the breakdown of large fat globules into smaller droplets.
➤ This increases the surface area for lipase action.Incorrect
➤ Emulsification is the breakdown of large fat globules into smaller droplets.
➤ This increases the surface area for lipase action. -
Question 3 of 25
3. Question
The largest gland in the human body is the
Correct
➤ Liver is the largest gland in the human body.
➤ It is located on the right side of the abdomen.Incorrect
➤ Liver is the largest gland in the human body.
➤ It is located on the right side of the abdomen. -
Question 4 of 25
4. Question
The study of the liver is called
Correct
➤ Hepatology is the study of the liver.
➤ It deals with liver structure, function and diseases.Incorrect
➤ Hepatology is the study of the liver.
➤ It deals with liver structure, function and diseases. -
Question 5 of 25
5. Question
The process of converting glucose into glycogen in the liver is called
Correct
➤ Glycogenesis is the conversion of glucose into glycogen.
➤ It allows the liver to store excess glucose.Incorrect
➤ Glycogenesis is the conversion of glucose into glycogen.
➤ It allows the liver to store excess glucose. -
Question 6 of 25
6. Question
The removal of the amino group from amino acids in the liver is called
Correct
➤ Deamination is the process of removing the amino group from amino acids.
➤ It occurs mainly in the liver during protein metabolism.Incorrect
➤ Deamination is the process of removing the amino group from amino acids.
➤ It occurs mainly in the liver during protein metabolism. -
Question 7 of 25
7. Question
The main function of the large intestine is to
Correct
➤ Large intestine absorbs water and electrolytes from undigested food.
➤ This process helps in formation of solid feces.Incorrect
➤ Large intestine absorbs water and electrolytes from undigested food.
➤ This process helps in formation of solid feces. -
Question 8 of 25
8. Question
The approximate length of the large intestine in humans is
Correct
➤ The large intestine is about 1.5 meters long.
➤ It follows the small intestine in the digestive tract.Incorrect
➤ The large intestine is about 1.5 meters long.
➤ It follows the small intestine in the digestive tract. -
Question 9 of 25
9. Question
The first part of the large intestine is called
Correct
➤ Cecum is the first section of the large intestine.
➤ It connects the small intestine to the colon.Incorrect
➤ Cecum is the first section of the large intestine.
➤ It connects the small intestine to the colon. -
Question 10 of 25
10. Question
Which part of the large intestine mainly absorbs water from undigested food?
Correct
➤ Colon is responsible for absorbing water from undigested food residues.
➤ It helps form solid waste (feces).Incorrect
➤ Colon is responsible for absorbing water from undigested food residues.
➤ It helps form solid waste (feces). -
Question 11 of 25
11. Question
Kupffer cells are found in the
Correct
➤ Kupffer cells are specialized phagocytic cells in the liver.
➤ They help remove pathogens and damaged cells from blood.Incorrect
➤ Kupffer cells are specialized phagocytic cells in the liver.
➤ They help remove pathogens and damaged cells from blood. -
Question 12 of 25
12. Question
Kupffer cells mainly function to
Correct
➤ Kupffer cells break down old or damaged red blood cells.
➤ They also help clean pathogens and debris from blood.Incorrect
➤ Kupffer cells break down old or damaged red blood cells.
➤ They also help clean pathogens and debris from blood. -
Question 13 of 25
13. Question
The main functional cells of the liver are called
Correct
➤ Hepatocytes are the primary functional cells of the liver.
➤ They perform metabolism, detoxification, and nutrient storage.Incorrect
➤ Hepatocytes are the primary functional cells of the liver.
➤ They perform metabolism, detoxification, and nutrient storage. -
Question 14 of 25
14. Question
Finger-like projections that increase the surface area for absorption in the small intestine are called
Correct
➤ Villi are finger-like projections in the small intestine.
➤ They increase the surface area for nutrient absorption.Incorrect
➤ Villi are finger-like projections in the small intestine.
➤ They increase the surface area for nutrient absorption. -
Question 15 of 25
15. Question
The main function of villi is to
Correct
➤ Villi greatly increase the surface area of the intestine.
➤ This allows efficient absorption of digested nutrients.Incorrect
➤ Villi greatly increase the surface area of the intestine.
➤ This allows efficient absorption of digested nutrients. -
Question 16 of 25
16. Question
The part of the digestive system that temporarily stores feces is
Correct
➤ Rectum is the terminal part of the large intestine.
➤ It stores feces temporarily before elimination.Incorrect
➤ Rectum is the terminal part of the large intestine.
➤ It stores feces temporarily before elimination. -
Question 17 of 25
17. Question
The opening through which feces are expelled from the body is called
Correct
➤ Anus is the final opening of the digestive tract.
➤ It allows the removal of solid waste from the body.Incorrect
➤ Anus is the final opening of the digestive tract.
➤ It allows the removal of solid waste from the body. -
Question 18 of 25
18. Question
The correct pathway of food in the digestive system is
Correct
➤ Food passes through the digestive tract in a fixed sequence.
➤ Pathway: Mouth → Pharynx → Esophagus → Stomach → Small intestine → Large intestine → Rectum → Anus.Incorrect
➤ Food passes through the digestive tract in a fixed sequence.
➤ Pathway: Mouth → Pharynx → Esophagus → Stomach → Small intestine → Large intestine → Rectum → Anus. -
Question 19 of 25
19. Question
Respiration is the process of
Correct
➤ Respiration is the biochemical breakdown of organic molecules.
➤ It releases energy in the form of ATP.Incorrect
➤ Respiration is the biochemical breakdown of organic molecules.
➤ It releases energy in the form of ATP. -
Question 20 of 25
20. Question
The energy currency of the cell is
Correct
➤ ATP (Adenosine Triphosphate) stores and releases energy in cells.
➤ It is known as the energy currency of the cell.Incorrect
➤ ATP (Adenosine Triphosphate) stores and releases energy in cells.
➤ It is known as the energy currency of the cell. -
Question 21 of 25
21. Question
Respiration in plants occurs mainly in
Correct
➤ Respiration occurs in all living cells of plants.
➤ It provides energy for metabolic activities.Incorrect
➤ Respiration occurs in all living cells of plants.
➤ It provides energy for metabolic activities. -
Question 22 of 25
22. Question
In plants, oxygen enters the roots mainly through
Correct
➤ Root hairs absorb oxygen from the air present in soil spaces.
➤ This oxygen is used for cellular respiration in root cells.Incorrect
➤ Root hairs absorb oxygen from the air present in soil spaces.
➤ This oxygen is used for cellular respiration in root cells. -
Question 23 of 25
23. Question
The outermost layer of young roots that helps in gas exchange is called
Correct
➤ Epiblema is the outermost layer of young roots.
➤ It allows diffusion of gases into root tissues.Incorrect
➤ Epiblema is the outermost layer of young roots.
➤ It allows diffusion of gases into root tissues. -
Question 24 of 25
24. Question
Air present between soil particles is called
Correct
➤ Soil air occupies the spaces between soil particles.
➤ Roots obtain oxygen from this soil air.Incorrect
➤ Soil air occupies the spaces between soil particles.
➤ Roots obtain oxygen from this soil air. -
Question 25 of 25
25. Question
Oxygen absorbed by roots is mainly used for
Correct
➤ Root cells use oxygen for aerobic respiration.
➤ This process releases energy for plant growth and metabolism.Incorrect
➤ Root cells use oxygen for aerobic respiration.
➤ This process releases energy for plant growth and metabolism.