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By Maitree Choube
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Updated on 28 Aug 2025, 12:37 IST
Explore our comprehensive collection of Nutrition in Animals Class 7 MCQs designed to enhance your understanding of Chapter 2 from the CBSE syllabus. This chapter delves into the fascinating ways animals, including humans, obtain and digest their food. Our Nutrition in Animals Class 7 MCQ with Answers is tailored to align with the NCERT guidelines and covers key concepts presented in your NCERT textbook.
As a bonus, we've also included links to Nutrition in Plants MCQ Class 7 with Answers to help students who are looking to review the entire scope of nutrition covered in their science curriculum. This Class 7 Science mcqs resource is a great way to prepare for your CBSE exams and ensure you're on track with the NCERT syllabus.
Here are the topic wise of various nutrition in animals MCQ with answers:
Q1. Which teeth in humans are mainly used for cutting food?
(a) Molars
(b) Premolars
(c) Incisors
(d) Canines
Answer: (c) Incisors
Q2. The finger-like projections inside the small intestine that absorb food are called:
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(a) Alveoli
(b) Villi
(c) Bronchi
(d) Papillae
Answer: (b) Villi
Q3. Which enzyme in saliva helps to digest starch?
(a) Pepsin
(b) Amylase
(c) Lipase
(d) Trypsin
Answer: (b) Amylase
Q4. The stomach secretes which acid to help digestion?
(a) Acetic acid
(b) Hydrochloric acid
(c) Sulphuric acid
(d) Nitric acid
Answer: (b) Hydrochloric acid
Q5. Which organ stores bile before releasing it into the small intestine?
(a) Pancreas
(b) Gall bladder
(c) Kidney
(d) Large intestine
Answer: (b) Gall bladder
Q6. Which part of the digestive system is the longest?
(a) Small intestine
(b) Large intestine
(c) Stomach
(d) Oesophagus
Answer: (a) Small intestine
Q7. The process by which undigested food is removed from the body is called:
(a) Ingestion
(b) Egestion
(c) Absorption
(d) Assimilation
Answer: (b) Egestion
Also Check: NCERT Solutions for Class 7 Science Chapter 2
Q8. Which animal uses a long, sticky tongue to catch insects?
(a) Cow
(b) Frog
(c) Rabbit
(d) Lion
Answer: (b) Frog
Q9. The liver helps in digestion by producing:
(a) Bile juice
(b) Saliva
(c) Pepsin
(d) Insulin
Answer: (a) Bile juice
Q10. Which organ produces digestive enzymes and insulin?
(a) Stomach
(b) Pancreas
(c) Kidney
(d) Gall bladder
Answer: (b) Pancreas
Q11. Amoeba digests its food in:
(a) Stomach
(b) Food vacuole
(c) Intestine
(d) NucleusAnswer: (b) Food vacuole
Q12. Which type of teeth help in tearing flesh in carnivores?
(a) Molars
(b) Premolars
(c) Incisors
(d) Canines
Answer: (d) Canines
Q13. What is the main function of villi in the small intestine?
(a) Produce enzymes
(b) Absorb digested food
(c) Digest proteins
(d) Store bile
Answer: (b) Absorb digested food
Q14. The grinding and chewing of food in the mouth is called:
(a) Peristalsis
(b) Mastication
(c) Assimilation
(d) Digestion
Answer: (b) Mastication
Q15. Which organ absorbs most of the water from undigested food?
(a) Small intestine
(b) Large intestine
(c) Stomach
(d) Pancreas
Answer: (b) Large intestine
Q16. The first step of digestion in humans starts in the:
(a) Stomach
(b) Mouth
(c) Small intestine
(d) Liver
Answer: (b) Mouth
Q17. The partially digested food in the stomach is called:
(a) Chyme (b) Chyle (c) Bolus (d) Villi
Answer: (a) Chyme
Q18. Where does the digestion of proteins begin in humans?
a) Mouth
b) Stomach
c) Small intestine
d) Large intestine
Answer: b) Stomach
Q19. What substance does the liver secrete?
a) Pancreatic juice
b) Saliva
c) Bile
d) Gastric juice
Answer: c) Bile
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Q20. What role does hydrochloric acid play in the stomach?
a) It breaks down fats
b) It kills bacteria
c) It digests proteins
d) It absorbs vitamins
Answer: b) It kills bacteria
Q21. What does the pancreas secrete?
a) Bile
b) Pancreatic juice
c) Hydrochloric acid
d) Mucous
Answer: b) Pancreatic juice
Q22. What type of animals are known as ruminants?
a) Those that chew cud
b) Those that eat meat only
c) Those that eat plants only
d) Those that swallow food whole
Answer: a) Those that chew cud
Q23. What is the purpose of rumination in certain animals?
a) To digest meat more efficiently
b) To break down cellulose
c) To increase food intake
d) To cool down the body
Answer: b) To break down cellulose
Q24. How does an amoeba ingest food?
a) Through a mouth
b) Using pseudopodia
c) Through gills
d) By absorption through the skin
Answer: b) Using pseudopodia
Q25. Where is bile stored?
a) Liver
b) Gall bladder
c) Stomach
d) Pancreas
Answer: b) Gall bladder
Q26. What is the primary function of the large intestine?
a) To digest proteins
b) To absorb water and salts
c) To produce digestive enzymes
d) To store undigested food
Answer: b) To absorb water and salts
Q27. What is tooth decay primarily caused by?
a) Acids produced by bacteria
b) Swallowing too quickly
c) Eating too much protein
d) Lack of saliva
Answer: a) Acids produced by bacteria
Q28. Why should you rinse your mouth after eating?
a) To cool down the mouth
b) To remove food particles and reduce bacteria
c) To taste the food better
d) To prepare for the next meal
Answer: b) To remove food particles and reduce bacteria
Q29. What is a common symptom of food poisoning?
a) Coughing
b) Sneezing
c) Diarrhoea
d) Itching
Answer: c) Diarrhoea
Q30. What should be given to a person suffering from diarrhoea?
a) Cold drinks
b) Oral Rehydration Solution (ORS)
c) Hot tea
d) Milk
Answer: b) Oral Rehydration Solution (ORS)
Q31. How do ruminants digest cellulose?
a) Using their own enzymes
b) With the help of bacteria in the rumen
c) By chewing repeatedly
d) Through a long digestive tract
Answer: b) With the help of bacteria in the rumen
Q32. Why do infants feed on mother's milk?
a) It is easier to digest
b) It provides necessary nutrients
c) It is a tradition
d) It is more available than other foods
Answer: b) It provides necessary nutrients
Q33. What happens in the buccal cavity?
a) Absorption of nutrients
b) Digestion of fats
c) Ingestion and initial digestion of food
d) Storage of food
Answer: c) Ingestion and initial digestion of food
Q34. What is the role of the tongue in digestion?
a) To push food into the stomach
b) To detect taste and help in mixing food with saliva
c) To digest carbohydrates
d) To store saliva
Answer: b) To detect taste and help in mixing food with saliva
Q35. What causes the sensation of choking while eating?
a) Food entering the windpipe
b) Food being too hot
c) Allergic reactions to food
d) Overeating
Answer: a) Food entering the windpipe
Q36. What is the approximate length of the human alimentary canal?
a) 5 meters
b) 10 meters
c) 7 meters
d) 30 meters
Answer: c) 7 meters
Q37. What is the primary function of the gall bladder?
a) To produce bile
b) To store bile
c) To digest fats
d) To absorb nutrients
Answer: b) To store bile
Q38. Which part of the digestive system is involved in the absorption of nutrients?
a) Stomach
b) Small intestine
c) Large intestine
d) Esophagus
Answer: b) Small intestine
Q39. What part of the digestive system has a role in killing bacteria?
a) Small intestine
b) Large intestine
c) Stomach
d) Mouth
Answer: c) Stomach
Q40. Where are proteins first digested in the human body?
a) Mouth
b) Stomach
c) Small intestine
d) Large intestine
Answer: b) Stomach
Q41. Which teeth are used for tearing food?
a) Molars
b) Canines
c) Incisors
d) Premolars
Answer: b) Canines
Q42. What initiates the digestion of starch?
a) Gastric juices
b) Bile
c) Pancreatic juice
d) Saliva
Answer: d) Saliva
Q43. What is the primary function of the teeth?
a) To produce saliva
b) To aid in digestion by breaking down food
c) To absorb nutrients
d) To protect the tongue
Answer: b) To aid in digestion by breaking down food
Q44. What does rumination involve?
a) Regurgitating swallowed food to chew it again
b) Swallowing food quickly
c) Digesting cellulose
d) Absorbing nutrients in the stomach
Answer: a) Regurgitating swallowed food to chew it again
Q45. Why is it advised to brush your teeth after eating sweets?
a) To freshen breath
b) To prevent tooth decay
c) To make teeth whiter
d) To prevent gum diseases
Answer: b) To prevent tooth decay
Q46. What causes diarrhoea?
a) Virus infection
b) Bacterial infection
c) Overeating
d) Both a and b
Answer: d) Both a and b
Q47. How does food move through the esophagus?
a) By gravity
b) By peristaltic movements
c) By active transport
d) By passive diffusion
Answer: b) By peristaltic movements
Q48. What is the first set of teeth called?
a) Permanent teeth
b) Baby teeth
c) Milk teeth
d) Temporary teeth
Answer: c) Milk teeth
Q49. Which part of the digestive system is the site for complete digestion of carbohydrates, fats, and proteins?
a) Stomach
b) Small intestine
c) Large intestine
d) Mouth
Answer: b) Small intestine
Q50. What is egestion?
a) Absorption of nutrients
b) Ingestion of food
c) Excretion of undigested food
d) Digestion of food
Answer: c) Excretion of undigested food
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Nutrition in animals refers to the process by which they obtain and utilize food to support growth, energy, and overall health.
There are two main types of nutrition in animals:
The different modes of heterotrophic nutrition include: Herbivores: Animals that eat plants (e.g., cows, rabbits). Carnivores: Animals that eat other animals (e.g., lions, eagles). Omnivores: Animals that eat both plants and animals (e.g., humans, bears).
The digestive system breaks down food into smaller, absorbable components, allowing nutrients to enter the bloodstream and be used by the body.
Animals need carbohydrates, proteins, fats, vitamins, and minerals for energy, growth, and overall health.
A balanced diet is crucial for maintaining health, supporting growth, and preventing diseases. It ensures that animals receive all essential nutrients.
"Different animal groups have evolved unique adaptations for nutrition based on their diets, habitats, and feeding mechanisms, influencing their digestive processes.