Question 26.
Enzymes present in saliva converts
(a) starch into simple sugars
(b) proteins into amino acids
(c) complex sugars into simple sugars
(d) fats into fatty acids and glycerol
Answer: (a) starch into simple sugars
Question 27.
The main function of the lacteals of intestine is the absorption of
(a) amino acids
(b) glucose and vitamins
(c) lactic acid
(d) fatty acids and glycerol
Answer: (d) fatty acids and glycerol
Question 28.
Which of the following is digested in mouth ?
(a) Sugar
(b) Protein
(c) Starch
(d) All the above
Answer: (c) Starch
Question 29.
From where do we take in food?
(a) Anus
(b) Mouth
(c) Stomach
(d) Oesophagus
Answer: (b) Mouth
Question 30.
The digestive tract and the associated glands together constitute the
(a) digestive system
(b) oesophagus
(c) alimentary canal
(d) nutrition system
Answer: (a) digestive system
Question 31.
The teeth of the first set that grew during infancy are called
(a) permanent teeth
(b) milk teeth
(c) starting teeth
(d) all of these
Answer: (b) milk teeth
Question 32.
The teeth of the second set that replace the milk teeth are known as
(a) permanent teeth
(b) temporary teeth
(c) milk teeth
(d) hard teeth
Answer: (a) permanent teeth
Question 33.
The process of taking food in the body is known as
(a) egestion
(b) ingestion
(c) digestion
(d) assimilation
Answer: (b) ingestion
Question 34.
The process through which undigested food is expelled out of the body is called
(a) digestion
(b) absorption
(c) assimilation
(d) egestion
Answer: (d) egestion
Question 35.
How many types of teeth are there?
(a) 1
(b) 2
(c) 3
(d) 4
Answer: (d) 4
Question 36.
The glands of mouth which secrete saliva are
(a) salivary glands
(b) pancreas
(c) lungs
(d) liver
Answer: (a) salivary glands
Question 37.
The breakdown of complex components of food into simpler substances is called
(a) ingestion
(b) egestion
(c) assimilation
(d) digestion
Answer: (d) digestion
Question 38.
Starch is broken down into sugars by the action of
(a) saliva
(b) bile juice
(c) hydrochloric acid
(d) all of these
Answer: (a) saliva
Question 39.
Which gland secretes bile juice?
(a) Liver
(b) Pancreas
(c) Bladder
(d) All of these
Answer: (a) Liver
Question 40.
The bile plays an important role in the digestion of
(a) carbohydrates
(b) fats
(c) sugar
(d) starch
Answer: (b) fats/p>
Question 41.
The removal of faeces through the anus from time to time is called
(a) rumination
(b) micturition
(c) ingestion
(d) egestion
Answer: (d) egestion
Question 42.
The teeth of first set fall off at the age between
(a) 10 – 20
(b) 6 – 8
(c) 9 – 1
(d) 0 – 2
Answer: (b) 6 – 8
Question 43.
Cellulose is a type of
(a) fats
(b) carbon dioxide
(c) carbohydrate
(d) all of these
Answer: (c) carbohydrate
Question 44.
Rumination can
(a) digest the cellulose
(b) not digest the cellulose
(c) may or may not digest cellulose
(d) all of these
Answer: (a) digest the cellulose
Question 45.
The finger-like outgrowths of human intestine helps to
(a) make the food soluble
(b) absorb the digested food
(c) absorb the undigested food
(d) digest the fatty food substances
Answer: (b) absorb the digested food
Question 46.
Many animals, including humans, cannot digest
(a) amino acid
(b) bile juice
(c) cellulose
(d) proteins
Answer: (c) cellulose
Question 47.
Which of the following are called the cutting teeth?
(a) Incisors
(b) Canines
(c) Molars
(d) Premolars
Answer: (a) Incisors
Question 48.
The process by which organisms take in food is called
(a) digestion
(b) assimilation
(c) ingestion
(d) egestion
Answer: (c) ingestion
Question 49.
The digestive food is absorbed in
(a) large intestine
(b) stomach
(c) liver
(d) small intestine
Answer: (d) small intestine
Question 50.
The mode of nutrition in amoeba is
(a) saprotrophic
(b) autotrophic
(c) holozoic
(d) symbiotic
Answer: (c) holozoic