CBSE Questions for Class 7 Biology Nutrition In Animals Quiz 4 - MCQExams.com

The teeth present after the age of 8-12 is called as
  • Milk teeth
  • Temporary teeth
  • Permanent teeth
  • Both A and C
In ruminant stomach, the rumen is the
  • Largest chamber
  • Chamber having cellulose fermenting microorganisms
  • Chamber having villi with cornified surface
  • All the above
A baby boy aged two years is admitted to play school and passes through a dental check-up. The dentist observed that the boy had twenty teeth. Which teeth were absent?
  • Molars
  • Incisors
  • Canines
  • Pre-molars
The number of canines present in the upper half jaw of an adult human  is:
  • 4
  • 3
  • 2
  • 1
Which of the following process can be skipped if someone has taken glucose directly?
  • Digestion
  • Absorption
  • Ingestion
  • Assimilation
Cellulose digestion in ruminants occurs in ________.
  • Rumen
  • Omasum
  • Abomasum
  • Reticulum
Which of the following is responsible for partial digestion in the mouth of ruminants?
  • High intake of cellulose
  • High intake of lactose
  • High intake of glucose
  • None of the above
In ruminants, bacterial action occurs in the _______.
  • Reticulum
  • Omasum
  • Abomasum
  • Rumen
Total number of canines in permanent dental set of human is
  • 4
  • 6
  • 2
  • 12
Eye teeth are
  • Upper incisors
  • Lower incisors
  • Lower canines
  • Upper canines
Which are cutting teeth in humans?
  • Canines
  • Molars
  • Premolars
  • Incisors
Number of milk teeth found in humans is 
  • 32
  • 20
  • 52
  • 12
The primary dentition in humans differs from permanent dentition in not having one of the following types of teeth:
  • Canine
  • Premolars
  • Molars
  • Incisors
Number of tonsils is
  • 2
  • 4
  • 6
  • 8
Which teeth of humans are shovel-shaped and used for nibbling, cutting, and tearing?
  • Canines
  • Premolars
  • Molars
  • Incisors
Which of the following phenomena helps in the degradation of complex substances of food into simpler ones?
  • Digestion
  • Ingestion
  • Excretion
  • Assimilation
Which of the following animals are involved in the fluid feeding mode?
  • Honey bees
  • Amoeba
  • Cow
  • None of the above
Which teeth of humans are used for ripping and tearing?
  • Canines
  • Premolars
  • Molars
  • Incisors
Wisdom tooth is the _____________.
  • First molar tooth
  • Second molar tooth
  • Third molar tooth
  • Fourth molar tooth
During cellulose fermentation by anaerobic bacteria in rumen and reticulum, cellulose is mainly changed into:
  • $$CO_2$$
  • Ethyl alcohol
  • Lactic acid
  • Volatile fatty acids
In the given figure of human tooth, some parts are labelled as A, B, C and D. Identify these parts and match them with their description given below.
(i) Contains dentine producing cells
(ii) 70% mineral matter, mainly calcium
(iii) Hardest material in the body
(iv) Connects root to the jawbone

891838_0684d9e99a8d4d22bf936c230382580d.png
  • A-(i), B-(ii), C-(iii), D-(iv)
  • A-(ii), B-(iii), C-(iv), D- (i)
  • A-(iii), B-(ii), C-(iv), D-(i)
  • A-(ii), B-(iii), C-(i), D- (iv)
Which of the following pairs of teeth performs a common function as stated against it?
  • Incisors & canines - Holding
  • Canines & premolars - Biting
  • Premolars & molars - Grinding
  • Molars & incisors - Tearing
The given figure shows the arrangement of different types of teeth in the jaw on one side. Identify A, B, C, and D.
A      B     C     D
886560_662e29667a4a47598559736e2b647e03.png
  • Incisors, Canine, Premolars, Molars
  • Molars, Premolar, Canines, incisors
  • Premolars, Molar, Incisors, Canines
  • Incisors, Canine, Molars, Premolars
The steps of the digestive process are listed below but not in correct order.
(i) Water and vitamin absorption begins.
(ii) Food is liquefied; breakdown of proteins begins.
(iii) Food is moistened; breakdown of starch begins.
(iv) Proteins, carbohydrates, and fats break down; nutrients are absorbed into the bloodstream.
Select the option that gives the correct order of these events as food passes through the human digestive tract.
  • (ii), (iv), (i), (iii)
  • (iv), (ii), (iii), (i)
  • (i), (iii), (ii), (iv)
  • (iii), (ii), (iv), (i)
  • If both assertion and reason are true and reason is the correct explanation of assertion.
  • If both assertion and reason are true but reason is not the correct explanation of assertion
  • If assertion is true but reason is false.
  • If both assertion and reason are false.
The following are the functions of organs or regions of the digestive system. Choose option with the incorrect description.
  • Liver- Absorption 
  • Mouth - Chewing and grinding
  • Large intestine - Absorption of water and salts
  • Stomach- Digestion 
Which of the following part/s of the human digestive system involves both chemical and mechanical ways of digestion?
  • Oesophagus
  • Stomach
  • Mouth
  • Both B and C
The amino acid _____ is obtained by microbial process by lactobacillus delbrueckii.
  • itaconic acid
  • lactic acid
  • gluconic acid
  • citric acid
Consider the following statement regarding human.
a. Duodenum is the longest part of small intestine
b. Hepatic and cystic ducts release their secretions into common bile duct whose opening is controlled by sphincter of Oddi
c. Ileocaecal valve is present at the junction of small intestine and large intestine
d. Mechanical digestion and chemical digestion of food occurs in buccal cavity, stomach and small intestine 
Which of the following choices is correct?
  • A and B only
  • B and C only
  • C and D only
  • A, B, C and D
The food we take in our body travels through a long and complex path starting from mouth to anus. Which is the correct sequence of processes on food in the digestive system?
  • Digestion $$\rightarrow$$ Absorption $$\rightarrow$$ Egestion $$\rightarrow$$ Ingestion
  • Ingestion $$\rightarrow$$ Egestion $$\rightarrow$$ Digestion $$\rightarrow$$ Absorption
  • Digestion $$\rightarrow$$ Ingestion $$\rightarrow$$ Absorption $$\rightarrow$$ Egestion
  • Ingestion $$\rightarrow$$ Digestion $$\rightarrow$$ Absorption $$\rightarrow$$ Egestion
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