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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 resource is a great way to prepare for your CBSE exams and ensure you’re on track with the NCERT syllabus.
Nutrition in Animals Class 7 Science Chapter 2 MCQ with Answers
Here are the topic wise of various nutrition in animals MCQ with answers:
1. What is the process of breaking down food into simpler substances called?
a) Ingestion
b) Digestion
c) Absorption
d) Assimilation
Answer: b) Digestion
2. Which mode of feeding involves the animal popping out its stomach to eat?
a) Sucking
b) Chewing
c) Capturing and swallowing
d) Siphoning
Answer: c) Capturing and swallowing
3. What is the main purpose of food for animals?
a) Growth and entertainment
b) Growth, repair, and functioning of the body
c) Growth and sleep
d) Repair and reproduction
Answer: b) Growth, repair, and functioning of the body
4. Where does the digestion of proteins begin in humans?
a) Mouth
b) Stomach
c) Small intestine
d) Large intestine
Answer: b) Stomach
5. What substance does the liver secrete?
a) Pancreatic juice
b) Saliva
c) Bile
d) Gastric juice
Answer: c) Bile
6. 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
7. What are the finger-like projections in the small intestine called?
a) Canines
b) Villi
c) Pseudopodia
d) Cilia
Answer: b) Villi
8. What is the function of villi in the small intestine?
a) To secrete digestive juices
b) To increase surface area for absorption
c) To produce bile
d) To chew food
Answer: b) To increase surface area for absorption
9. What does the pancreas secrete?
a) Bile
b) Pancreatic juice
c) Hydrochloric acid
d) Mucous
Answer: b) Pancreatic juice
10. How long is the small intestine in humans approximately?
a) 1.5 meters
b) 7.5 meters
c) 5 meters
d) 10 meters
Answer: b) 7.5 meters
11. 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
12. Which animals have a part of the stomach called the rumen?
a) Carnivores
b) Herbivores
c) Omnivores
d) Insectivores
Answer: b) Herbivores
13. 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
14. 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
15. What is the role of digestive juices in the stomach?
a) To make food tastier
b) To break down food into simpler substances
c) To cool down the food
d) To store food for longer periods
Answer: b) To break down food into simpler substances
16. Where is bile stored?
a) Liver
b) Gall bladder
c) Stomach
d) Pancreas
Answer: b) Gall bladder
17. 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
18. What triggers the production of saliva in the mouth?
a) Seeing food
b) Swallowing food
c) Digesting food
d) Absorbing nutrients
Answer: a) Seeing food
19. 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
20. 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
21.
What is a common symptom of food poisoning?
a) Coughing
b) Sneezing
c) Diarrhoea
d) Itching
Answer: c) Diarrhoea
22. 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)
23. 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
24. 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
25. 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
26. 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
27. 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
28. 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
29. 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
30. 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
31. What is the role of the stomach in digestion?
a) To absorb nutrients
b) To store undigested food
c) To mix food with digestive juices
d) To secrete bile
Answer: c) To mix food with digestive juices
32. 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
33. What are the main steps of nutrition in humans?
a) Ingestion, digestion, absorption, assimilation, egestion
b) Ingestion, respiration, absorption, assimilation, egestion
c) Ingestion, digestion, respiration, assimilation, egestion
d) Ingestion, digestion, absorption, respiration, egestion
Answer: a) Ingestion, digestion, absorption, assimilation, egestion
34. Which gland secretes digestive juices into the small intestine?
a) Salivary glands
b) Liver
c) Gall bladder
d) Pancreas
Answer: d) Pancreas
35. Where are proteins first digested in the human body?
a) Mouth
b) Stomach
c) Small intestine
d) Large intestine
Answer: b) Stomach
36. What is the role of the large intestine in the digestive system?
a) To digest carbohydrates
b) To absorb water and salts
c) To secrete digestive enzymes
d) To produce bile
Answer: b) To absorb water and salts
37. Which teeth are used for tearing food?
a) Molars
b) Canines
c) Incisors
d) Premolars
Answer: b) Canines
38. What is the role of saliva in the digestion of food?
a) It helps in the digestion of proteins
b) It helps in the digestion of fats
c) It helps in the digestion of carbohydrates
d) It does not play a role in digestion
Answer: c) It helps in the digestion of carbohydrates
39. What initiates the digestion of starch?
a) Gastric juices
b) Bile
c) Pancreatic juice
d) Saliva
Answer: d) Saliva
40. What is the function of mucus in the stomach?
a) To digest food
b) To protect the stomach lining
c) To absorb nutrients
d) To produce hydrochloric acid
Answer: b) To protect the stomach lining
41. 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
42. Answer: b) To aid in digestion by breaking down food
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
43. 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
44. What causes diarrhoea?
a) Virus infection
b) Bacterial infection
c) Overeating
d) Both a and b
Answer: d) Both a and b
45. 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
46. What is the first set of teeth called?
a) Permanent teeth
b) Baby teeth
c) Milk teeth
d) Temporary teeth
Answer: c) Milk teeth
47. 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
48. What is the role of bile in the digestion of fats?
a) It breaks down fats into fatty acids and glycerol
b) It emulsifies fats
c) It absorbs fats
d) It stores fats
Answer: b) It emulsifies fats
49. 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
50. Which type of carbohydrate can ruminants digest that humans cannot?
a) Starch
b) Glucose
c) Cellulose
d) Sucrose
Answer: c) Cellulose
Nutrition in Animals Class 7 Science Chapter 2 FAQs
What is nutrition in animals?
Nutrition in animals refers to the process by which they obtain and utilize food to support growth, energy, and overall health.
What are the types of nutrition in animals?
There are two main types of nutrition in animals: Autotrophic Nutrition: Where organisms produce their own food (e.g., plants). Heterotrophic Nutrition: Where animals obtain food from other organisms.
What are the different modes of heterotrophic nutrition?
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).
What is the role of the digestive system in nutrition?
The digestive system breaks down food into smaller, absorbable components, allowing nutrients to enter the bloodstream and be used by the body.
How do ruminants digest food?
Ruminants, like cows, have a specialized stomach with four compartments. They chew their food, swallow it, and later regurgitate it as cud to chew again, aiding in digestion.
What is the difference between digestion in herbivores and carnivores?
Herbivores have a longer digestive tract with specialized organs to break down tough plant fibers, while carnivores have shorter tracts suited for digesting protein-rich meat.
What are the main components of food that animals need?
Animals need carbohydrates, proteins, fats, vitamins, and minerals for energy, growth, and overall health.
How do animals absorb nutrients?
Nutrients are absorbed primarily in the small intestine through the walls into the bloodstream, where they are transported to different cells in the body.
What is the importance of a balanced diet for animals?
A balanced diet is crucial for maintaining health, supporting growth, and preventing diseases. It ensures that animals receive all essential nutrients.
How does the process of nutrition differ among various animal groups?
Different animal groups have evolved unique adaptations for nutrition based on their diets, habitats, and feeding mechanisms, influencing their digestive processes.
