Animal Physiology MCQs Part I

1) The lifting of a weight is a
a) Physicochemical phenomenon
b) Physical phenomenon
c) Biochemical phenomenon
d) Bio-physicochemical phenomenon

2) During nerve impulse conduction electric energy is produced. What is the source of this energy?
a) DNA
b) RNA
c) ATP

3) Our brain is highly evolved due to presence of ——- nerve cells
a) 10 million
b) 100 million
c) 1000 million
d) 10000 million

4) During sleep there is
a) No BMR in man
b) No energy transformation
c) Energy transformation for vital functions as breathing, circulation of blood and thermoregulation
d) No metabolic reactions

5) Study of the human mind, behavior and mental qualities is called
a) Physiotherapy
b) Occupational therapy
c) Psychiatry
d) Physiology

6) Human heart valves open and close …. times in a day
a) 1,00,000
b) 60
c) 16
d) 5,00,000

7) The major homeostatic centres of the brain are the
a) Cerebrum and cerebellum
b) Cerebrum and medulla oblongata
c) Corpus callosum and pons varolli
d) Hypothalamus and medulla oblongata

8) The homeostatic regulation of an animal requires three basic components. … to detect changes,……….to evaluate the changes and………… to adjust the changes respectively
a) Receptors; affectors; effectors
b) Brain; spinal cord; efffectors
c) Receptors; integrators; effectors
d) Receptors; effectors; affectors

9) Common salt helps in the digestion of food because
a) It maintains the turgidity of erythrocytes
b) Prevents dehydration
c) Cl is an important constituent of blood plasma
d) Chloride forms HCl of gastric juice, and digestion occurs in an acidic medium

10) It is probable that a mammal smaller than a shrew could not exist because it would
a) Not get sufficient oxygen
b) Reproduce too rapidly
c) Not be able to defend
d) Have to eat at a tremendous rate

11) The cicada sleeps for 17 years. When it wakes up it remains alive for a period of
a) 5 days
b) 5 weeks
c) 5 months
d) 5 years

12) Reserve food in case of animals is in the form of
a) Glucose
b) Starch
c) Cellulose
d) Glycogen

13) Which of the following is an exotic Indian fish?
a) Clarias
b) Labeo
c) Cyprinus
d) Daphnia

14) The secretion of the sweat glands of mammals is primarily meant for
a) Regulation of body temperature
b) Removal of excess salt
c) Removal of excess water
d) Killing of skin bacteria

15) The adult human lungs have an internal area of

16) The fastest nerve impulse in the human body travels at
a) 3,00,000 km per second
b) 532 km per hour
c) 93 km per hour
d) 300 km per second

17) The fastest land animal is the
a) Lion
b) Walrus
c) Horse
d) Cheetah

18) The salivary gland that is absent in man is the
a) Parotid gland
b) Sub-maxillary gland
c) Sub-lingual gland
d) Infra-orbital gland

intrinsic factor, the gastric enzyme serves to

a) Stimulate gastric secretion
b) Activate gastric lipase
c) Help in the absorption of vitamin B12
d) Regulate the co-enzyme activity of vitamin B1

20) Lacteals are central lymph vessels found in the
a) Pancreas
b) Microvilli
c) Stomach wall
d) Villi

21) The crown of the tooth is covered with
a) Cement
b) Enamel
c) Dentine
d) Chitin

22) The activator of intestinal juice is
a) Succus entericus
b) Enterocarbonase
c) Enterokinase
d) Enterozymase

23) Holozoic and saprozoic methods of nutrition both represent
a) Autotrophy
b) Heterotrophy
c) Chemotrophy
d) Mesotrophy

24) In predatory animals, the blood sucked from the prey is digested
by the enzyme

a) Hirudin
b) Heparin
c) Pepsin
d) Trypsin

25) In man dental caries results from the deficiency of
a) Calcium
b) Phosphorus
c) Chlorine
d) Fluorine

26) Milk-protein is acted upon by the gastric enzyme
a) Rennin
b) Casein
c) Pepsin
d) Prosecretin

27) The uvula is the extension of the
a) Tongue
b) Hard palate
c) Soft palate
d) Cheek

28) A hormone secreted by the mucous membrane of the duodenum stimulating
the secretion of the bicarbonate-rich part of pancreatic juice is

a) Gastrin
b) Secretin
c) Ptyalin
d) Prosecretin

29) Protein digestion begins in the
a) Stomach
b) Small intestine
c) Buccal cavity
d) Large intestine

30) The controlling centre of salivation is situated in the
a) Cerebellum
b) Cerebrum
c) Medulla
d) Hypothalamus

31) One of the nutrients required for maturation of erythrocytes is
a) Vitamin C
b) Vitamin B
c) Vitamin K
d) Vitamin B12

32) An organ that has extensive power of regeneration in man is:
a) Pancreas
b) Liver
c) Spleen
d) Stomach

33) The enzyme that is similar from amoeba to man is
a) Pepsin
b) Trypsin
c) Carboxypeptidase
d) Erepsin

34) The intestinal movements of food are inhibited by the
a) Sympathetic nervous system
b) Parasympathetic nervous system
c) Central nervous system
d) All of these

35) A carbohydrate which is a monosaccharide is
a) Glucose
b) Starch
c) Sucrose
d) Cellulose

36) Man needs carbohydrates as a source of energy and derives these

a) Starch
b) Cellulose
c) Both
d) None

37) Proteins are degraded to amino acids in the
a) Small intestine
b) Colon
c) Stomach
d) Caecum

38) The food which is most essential for body growth and cell proliferation is
a) Fats
b) Sugars
c) Minerals
d) Proteins

39) The total number of nerve cells present in the human brain is
a) 1,000 million
b) 10,000 million
c) 11,000 million
d) 1,00,000 million

40) Nutritional anaemia is commonly caused by the deficiency

a) K
b) Iron
c) Folic acid

41) The substrate of the enzyme amylase is
a) starch
b) fat
c) protein
d) cane sugar

42) Curdling of milk in the stomach is due to
the action of

a) Pepsin
b) Rennin
c) HCl
d) Heat

43) The substrate of lipase enzyme is
a) starch
b) fat
c) protein
d) cane sugar

44) The function of trypsin is to
a) break down fats
b) break down proteins
c) break down carbohydrates
d) manufacture proteins

45) The vitamin which can be synthesized in the
gut by bacterial action is

d) all above

46) The
cells of the islets of Langerhans, which
produce insulin,are situated in the

a) kidney
b) pancreas
c) testis
d) ovary

47) The major part of digestion is completed
in the

a) mouth
b) stomach
c) small intestine
d) large intestine

48) In the house-fly, the mouth is
a) sponging
b) piercing and sucking
c) cutting
d) all

49) Multi-unit smooth muscles occur in the
walls of the

a) urinary bladder
b) intestine
c) blood vessels
d) stomach

50) Which is correct?
a) All digestive enzymes are hydrolytic
b) All digestive enzymes are ligases
c) Both above
d) Most digestive enzymes are proteolytic

51) The following is acidic:
a) pancreatic juice
b) intestinal juice
c) gastric juice
d) none of these

52) Glycogen is related to … as fats
are to fatty acids

a) glucose
b) starch
c) protein
d) maltose

53) Nutrition means
a) procurement of substances for the growth and maintenance of the body
b) conversion of complex molecules into simple ones
c) consumption of food
d) food full of vitamins only

54) Pick out the correct histological sets
from the following

a) kidney – glomerulus, loop of Henle, alveoli
b) lung – bronchus, bronchioles, vocal cords
c) intestine – crypts of Lieberkuhn, goblet cells, submucosa

55) The highest number of calories per unit mass is obtained from

a) carbohydrates
b) fats
c) protein
d) same for all

56) Hydra can digest all types of food except
a) glucose
b) starch
c) fat
d) protein

57) Casein in milk is a
a) sugar
b) fat
c) protein
d) bacterium

58) Digestion can be said to be a process

a) autolysis
b) hydrolysis
c) photolysis
d) dialysis

59) Sodium taurocholate is found in the
a) blood
b) bile
c) infundibulum
d) liver

60) In most vertebrates protein digestion
ends in the

a) oral cavity
b) duodenum
c) stomach
d) ileum

61) Amoeba is nutritionally
a) holozoic
b) saprozoic
c) holophytic
d) saprophytic

62) Ascorbic acid is
a) Vitamin K
b) Vitamin B
c) Vitamin A
d) Vitamin C

63) Which of the following are non-essential
amino acids?

a) Alanine and Cysteine
b) Glycine and proline
c) Asparagine and cysteine
d) All of these

64) The ileum is that part of the alimentary canal
a) which secretes all types of enzymes
b) where digestion is completed
c) which is the longest
d) all the above

65) The mammals which show discontinuous distribution are
a) Eutheria
b) Metatheria
c) Crossapterygii
d) Holocephali

66) Beaked mammals include
a) Eutheria
b) Metatheria
c) Theria
d) None

67) A didelphic condition is found in
a) Prototheria
b) Marsupialia
c) Monotremes
d) None

68) The milk glands of eutherians are modified
a) Sebaceous glands
b) Oil glands
c) Sweat glands
d) Lymph glands

69) The whale is a mammal living in cold waters. The adult has no hair. This
indicates that the whales

a) has reverted to cold-blooded conditions
b) possess an alternate method of heat conservation
c) eats a large bulk of food to produce body heat
d) periodically moves to hot waters for storing heat

70) The hairy and milk-producing duckbilled platypus lays eggs and has a common
aperture for rectal, reproductive and excretory products.This suggests

a) This is a degenerate mammal
b) This is a stage between birds and mammals
c) This is a reptile form that gave rise to mammals
d) This is a primitive mammal

71) The kangaroo is a
a) eutherian mammal
b) metatherian mammal
c) prototherian mammal
d) non-mammal

72) Which of the following is an intelligent social mammal?
a) Dolphins
b) Porpoises
c) Tigers
d) Both A and B

73) Carnassial teeth are characteristic of
a) Carnivora
b) Marsupialia
c) Cetacea
d) Primates

74) The whale is a warm-blooded creature that can survive in very cold seas. Its
main device for keeping the body warm is

a) A thick layer of fat
b) A thick hairy coat
c) Thick muscles
d) Thick blood vessels

75) The elephant is an inhabitant of a hot climate. This is suggested by its
a) Huge size
b) Fleshy feet
c) Almost hairless skin
d) Small eyes

76) Two chief features of mammals which distinguish them from other vertebrates

a) Hairy skin and oviparity
b) Hairy skin and mammary glands
c) Mammary glands and teeth
d) Pinna and teeth

77) Which animal eats its own faeces?
a) Pig
b) Goat
c) Rabbit
d) Elephant

78) Which set of animals belongs to the same class?
a) Hydra, jellyfish and crayfish
b) Bat, pigeon and whale
c) Spider, scorpion and centipede
d) Kangaroo, whale and otter

79) The gangetic dolphin is a
a) Fish
b) Reptile
c) Mammal
d) Turtle

80) The “sea lion” belongs to
a) Class Reptilia
b) Subclass Prototheria
c) Superclass Pisces
d) Order Carnivora

81) Which will not affect echo-location in bats?
a) covering the eyes only
b) covering the whole head
c) covering the ears
d) covering the eyes and ears

82) The gorilla, chimpanzee, man and monkey belong to the same
a) Order
b) Family
c) Genus
d) Species

83) The smallest egg belongs to
a) Fishes
b) Amphibians
c) Reptiles
d) Mammals

84) Locomotion in the kangaroo is
a) Saltatorial
b) Volant
c) Cursorial
d) Creeping

85) A mammal in which milk is squirted down into the throat of the baby by the muscular
contraction of the mother is the

a) Whale
b) Rhinoceros
c) Bear
d) Camel

86) Which one of the following is an exclusive character of class Mammalia?
a) homeothermy
b) 4-chambered heart
c) muscular diaphragm
d) nucleated RBCs

87) Which one has a poison gland?
a) Wall lizard
b) Scoliodon
c) Rat snake
d) Male platypus

88) The oldest fossil of a mammal is from the
a) Permian
b) Triassic
c) Jurassic
d) Cretaceous

89) The hardened intestinal secretion of tthe sperm whale is called
a) Blubber
b) Ambergris
c) Isinglass
d) Guano

90) Whales are included in the same taxonomic class with
a) Shark
b) Sea horse
c) Gorilla
d) Crocodile

91) The chyle contains
a) proteins, starches, fats
b) peptones, starches, fats, and HCl
c) amino acids, HCL fats and starches
d) sugars, fatty acids, glycerol and amino acids

92) Fatty acids and glycerol are absorbed into
a) capillaries
b) lymph
c) skin
d) none above but hepatic portal vein

93) The ruminant stomach has four parts: but camel lacks one part, ie,
a) abomasum
b) omasum
c) rumen
d) reticulum

94) One of these vitamins is antiviral:
a) A
b) D
c) C
d) K

95) Carbohydrates are changed to —– by the enzyme lactase in mammals:
a) Glucose and galactose directly
b) First to lactose than to glucose and galactose
c) Fat
d) Glycogen

96) Which of the following is correct regarding gastric lipase?
a) Changes lipids to glycerol
b) Changes lipids into fatty acids and glycerol
c) Has no action
d) Digests no proteins

97) Pyridoxine is vitamin
d) K

98) Absorption of the food is carried out by ….. diffusion
a) Active
b) Passive
c) Both above
d) None above

99) Which of the following is the holozoic mode of nutrition?
a) Food is taken into the body and digested inside the body and absorbed into the body
b) Food is obtained from the body of the host
c) Radiant energy is trapped in and conserved in the organic molecules synthesized
d) Decomposed organic materials are absorbed through body surface

100) The process by which absorbed nutrient materials are used for the synthesis of body building molecules or energy yielding molecules is called
a) Ingestion
b) Defecation
c) Assimilation
d) Digestion


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