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 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 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.

BuffaloQ17: 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.

Pancreas

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

Human

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.

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

Stomach

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