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Class 7 Science Chapter 2 Question Answers - Nutrition in Animals

Q1: Name the largest gland in the human body.
Ans: Liver

Q2: Animal nutrition includes
a. Nutrient requirements
b. Mode of intake of food
c. Utilization of food in the body
d. All of the above.
Ans: All of the above

Q3: Define digestion.
Ans: The process of breaking down complex substances of food into simpler forms is called digestion.

Q4: Name the parts of the alimentary canal.
Ans: Buccal cavity, oesophagus, stomach, small intestine, large intestine, rectum and anus.

Alimentary CanalAlimentary Canal

Q5: Name the glands that secrete digestive juice__________________.
Ans: Salivary gland, pancreas and liver

Q6: The process of taking food into the body is called __________.
Ans: Ingestion

Q7: We chew food with ____________ and break it mechanically into small pieces.
Ans: Teeth

Types of TeethTypes of Teeth

Q8: Name the different types of teeth.
Ans: Incisor, canine, premolar and molar

Q9: The saliva breaks down starch into sugars. True/ False.
Ans: True

Q10: Kids of three years of age have _____________ teeth.
Ans: Milk

Q11: Name the type of food of the ant
Ans: Ant eats sugar, food particles

Q12: Name the type of food of mosquitoes.
Ans: Blood

Q13: Name the mode of feeding of ants and mosquitoes.
Ans: The feeding mode of ants is scraping, and the mode of feeding of mosquitoes is sucking.

Q14: Amoeba digests its food in the ________________.
Ans: Food vacuole.

Q15: The tongue helps in mixing food with saliva. True/ False.
Ans: True.

Q16: Name ruminants.
 Ans: 
Grazing animals like cows, buffaloes, and deer.

BuffaloBuffaloQ17: Name the finger-like projection present in the inner wall of the small intestine
Ans: 
Villi

Q18: Name the organ responsible for removing undigested and unabsorbed residues from the human body.
Ans: 
Anus

Q19: Bile juice is stored in a sac called___________________
Ans: 
Gall bladder

Q20: Bile is responsible for the digestion of
 a. Fat
 b. Protein
 c. Vitamins
 d. Both a and b
 e. None of these
Ans: 
Fat

Q21: What is the location of the pancreas?
 Ans: 
The Pancreas is located just below the stomach.

PancreasPancreas

Q22: The pancreatic juice acts on
 a. Carbohydrates
 b. Fats
 c. Proteins
 d. All of the above
Ans: 
All of the above.

Q23: Name the end products of carbohydrates.
Ans: 
Simple sugars such as glucose

Q24: Name the end products of fats.
Ans: 
Fatty acids

Q25: Name the end products of proteins.
Ans: 
Amino acids.

Q26: Large intestine receives digested and absorbed food. True/ False.
Ans: 
False

Q27: Define egestion.
Ans: 
The process of removal of faecal matter from the body through the anus is called egestion.

Q28: What are the causes of diarrhoea in human beings?
Ans: 
Infection, food poisoning, or indigestion.

Q29: What is the full form of ORS?
Ans:  
Oral Rehydration Solution

HumanHuman

Q30: How is food pushed down from mouth to stomach?
Ans: 
Food is pushed down by the movement of the wall of the food pipe.

Q31: Humans can digest cellulose. True/False.
Ans: 
False.

Q32: The digestion of cellulose takes place in ________________ present in all ruminants.
Ans:  
Rumen

Q33: Amoeba uses____________ for movement and capture of food.
Ans: 
Pseudopodia.

AmoebaAmoeba

Q34: Name the part of the digestive canal involved in the absorption of food.
Ans: 
Small intestine

Q35: Name the part of the digestive canal involved in the complete digestion of food.
Ans: 
Small intestine

Q36: Name the part of the digestive canal that kills bacteria.
Ans: 
Stomach

StomachStomach

Q37: Name the part of the digestive canal involved in the formation of faeces.
Ans: 
Large intestine

Q38: Name the part of the digestive canal involved in chewing food.
Ans: 
Mouth or Buccal cavity

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FAQs on Class 7 Science Chapter 2 Question Answers - Nutrition in Animals

1. What is the role of nutrition in animals?
Ans. Nutrition in animals involves the process of obtaining, consuming, and utilizing nutrients for growth, development, and energy production.
2. How do animals obtain nutrients?
Ans. Animals obtain nutrients through ingestion of food, which is then broken down into simpler forms for absorption by the body.
3. What are the different types of nutrients required by animals?
Ans. Animals require macronutrients such as carbohydrates, proteins, and fats for energy, as well as micronutrients like vitamins and minerals for various bodily functions.
4. How does the digestive system of animals help in nutrition?
Ans. The digestive system of animals plays a crucial role in breaking down food into nutrients that can be absorbed and utilized by the body for various physiological processes.
5. Why is proper nutrition important for the health of animals?
Ans. Proper nutrition is essential for animals to maintain overall health, support growth and development, and prevent various diseases and deficiencies.
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