This set of Human Physiology Multiple Choice Questions & Answers (MCQs) focuses on “Digestion and Absorption – Buccal Cavity, Alimentary Canal, Nutrition Types & Process”.
1. Crown of teeth is covered by __________
a) enamel
b) dentine
c) skin
d) sone
View Answer
Explanation: Crown of teeth is covered by enamel. It is the highly mineralized substance of the body.
2. Alimentary canal is absent in __________
a) Fasciola hepatica
b) Taenia solium
c) Ascaris suum
d) Ancylostoma caninum
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Explanation: Taenia solium is a pork tapeworm. It is a parasite causing disease. It lacks the alimentary canal.
3. How many teeth appear twice during the life span of an individual?
a) 16
b) 17
c) 20
d) 32
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Explanation: 20 teeth appear twice during the life span of an individual. The first set is called milk teeth and the second set is called permanent teeth.
4. The pH of saliva is?
a) 9.5
b) 8
c) 7.5
d) 6.8
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Explanation: The pH of saliva is 6.8.it is basic in nature. It has enzymes to digest carbohydrates.
5. Alimentary canal of herbivores differs from carnivore in having _________
a) Short alimentary canal
b) Long alimentary canal
c) Thin alimentary canal
d) Fat alimentary canal
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Explanation: Herbivores as grass eating animals. To digest the cellulose present in it the herbivores have long alimentary canal comparing to carnivores.
6. Diastema is associated with _________
a) Absence of teeth
b) Organ of corti
c) Retinal cells
d) Presence of extra teeth
View Answer
Explanation: Diastema is associated with an absence of teeth. It is very common in human beings.
7. The involuntary muscular movement of alimentary canal is called _________
a) Amoeboid movement
b) Peristalsis movement
c) Smooth movement
d) All of the mentioned
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Explanation: Peristalsis movement is an involuntary muscular movement. It occurs in esophagus, stomach and intestines.
8. Which of the following are the chisel shaped teeth use for biting?
a) Incisors
b) Canines
c) Molars
d) Pre molars
View Answer
Explanation: Incisors are four in numbers in a human being. They are located in the premaxilla above and on the mandible below.
9. Which of the following does not release any enzyme?
a) Salivary glands
b) Esophagus
c) Stomach
d) Pancreas
View Answer
Explanation: Esophagus does not release any enzyme. It connects throat from stomach and food passes through it.
10. Which of the following vitamin is water soluble and antioxidant?
a) Vitamin B1
b) Vitamin A
c) Vitamin D
d) Vitamin C
View Answer
Explanation: Vitamin C is water soluble and antioxidant. The disease scurvy is prevented and treated using vitamin C rich supplements.
11. Enzymes, vitamins and hormones can be classified into single category on biological chemicals because they __________
a) enhance oxidative metabolisms
b) help in regulating metabolism
c) are conjugated proteins
d) are exclusively synthesized inside the body
View Answer
Explanation: Enzymes, vitamins and hormones can be classified into single category on biological chemicals because of all of these help in regulating metabolism. They play a major role in the functioning of human body.
12. Microphagial nutrition occurs in __________
a) paramecium
b) insects
c) euglena
d) hydra
View Answer
Explanation: Microphagial nutrition occurs in Paramecium. Paramecium is a tiny unicellular organism found in water.
13. Kwashiorkor disease occurs due to deficiency of _____________
a) lipids
b) sugars
c) hormones
d) proteins
View Answer
Explanation: Kwashiorkor disease occurs due to a deficiency of proteins. It is a form of malnutrition.
14. Osteomalacia occurs due to deficiency of ___________
a) Vitamin D
b) Vitamin A
c) Vitamin B
d) Vitamin E
View Answer
Explanation: Osteomalacia is the softening of bones caused by impaired bone metabolism. It is caused due to inadequate levels of vitamin D calcium and phosphate.
15. Biotrophic nutrition is shown by ___________
a) humans
b) insectivorous plants
c) invertebrates
d) saprophytic plants
View Answer
Explanation: Biotrophic pathogens derive nutrients from living cells by maintaining host viability. They don’t kill host plant rapidly.
Sanfoundry Global Education & Learning Series – Human Anatomy and Physiology.
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