Homeostasis Quiz Questions and Answers

College Biology Chapter Quiz, MCQs & Practice Test


By Arshad Iqbal

Content:

"HomeostasisQuestions and Answers" covers multiple choice questions and answers (MCQs) from competitive exams.

Homeostasis Quiz


MCQ 1: The inner semi-fluid of the invertebral disc is

        A. nucleus pulposus
        B. annulus fibrosus
        C. ileum fibrosus
        D. cytoplasmic polposus


MCQ 2: Freezing temperatures form ice crystals within protoplasm, perforates membranes and organelles, eventually, the cell is

        A. regenerated
        B. killed
        C. phagocytosed
        D. plasmolysed


MCQ 3: The tubular system opens to the exterior through several

        A. nephridiophore
        B. nephrostome
        C. protonephridium
        D. protophrostome


MCQ 4: There is a thick layer of insulating fat in whales and seals which protects them from colder water, this layer is known as

        A. brown fat
        B. cuticle
        C. blubber
        D. integument


MCQ 5: The joints which are held together by fibers of connective tissue are called

        A. fibrous joints
        B. synovial joints
        C. hinge joints
        D. ball and socket joints


MCQ 6: The extensive convoluted part of Bowman's capsule is called

        A. vasa recta
        B. renal hilus
        C. loop of henel
        D. distal part


MCQ 7: The central cavity of the kidneys is known as

        A. ureter
        B. pelvis
        C. bladder
        D. medulla


MCQ 8: The detoxification of ammonia to citrulline requires the precursor of

        A. ornithine
        B. arginine
        C. creatine
        D. glutamine


MCQ 9: The most common chronic arthritis which degenerates joints is

        A. osteoporosis
        B. Arthritis
        C. cleft palate
        D. osteoarthritis


MCQ 10: Elevated temperatures damage metabolism by denaturing

        A. proteins
        B. enzymes
        C. carbohydrates
        D. fats


MCQ 11: The bile secretion of the liver helps in emulsifying fats in

        A. large intestine
        B. small intestine
        C. stomach
        D. rectum


MCQ 12: In brassica, rose and mango plants, the stomata open and close according to availability of

        A. salts
        B. nutrients
        C. sunlight
        D. water


MCQ 13: The suspended tubular structures which collect excretory products from hemolymph are called

        A. protonephridium
        B. metanephridium
        C. malpighian tubules
        D. exoluticus tubules


MCQ 14: The blood of chronic kidney failed patient is purified by passing it through

        A. filter
        B. pace maker
        C. artificial kidney
        D. transplanting kidney


MCQ 15: The network of closed tubules without internal openings are called

        A. protonephridium
        B. metanephridium
        C. malpighian tubules
        D. exoluticus tubules


MCQ 16: The arginine is split to form urea by the enzyme activity of

        A. arginase
        B. ornithine
        C. carboxylate
        D. sulfuricate


MCQ 17: The smallest contractile unit of muscle fiber is

        A. myofilament
        B. fibrils
        C. tendons
        D. sarcomere


MCQ 18: The ureter of both kidneys pour the urine in to

        A. pelvis
        B. urinary bladder
        C. urethra
        D. ureter


MCQ 19: The protection of the internal environment from the harms by the external environment is termed as

        A. thermoregulation
        B. homeostasis
        C. osmoregulation
        D. nerve impulse


MCQ 20: In the presence of hypo osmotic body fluids, the inhibition occurs in the production of the hormone

        A. antidiuretic
        B. diuretic
        C. aldosterone
        D. adrenaline


MCQ 21: In the restricted supply of water, the principal function of the body is to conserve

        A. salts
        B. nutrients
        C. oxygen
        D. water


MCQ 22: The sudden physical trauma to the spine while bending or lifting heavy weight can lead to

        A. rickets
        B. herniation
        C. realignment
        D. kwashiorkor


MCQ 23: The juxtamedullary nephrons are specialized for the production of

        A. urea
        B. concentrated urine
        C. uric acid
        D. ammonia


MCQ 24: If the kidney is completely lost and unable to eliminate nitrogenous waste, it leads to

        A. chronic renal failure
        B. chronic liver failure
        C. chronic respiratory failure
        D. chronic pancreas failure


MCQ 25: The cervical vertebrae are 7 in number and lie in the region of

        A. thoracic
        B. pelvic
        C. neck
        D. medulla


MCQ 26: The major constituent of hemoglobin receives iron from

        A. liver
        B. bolus
        C. chyme
        D. lungs


MCQ 27: The weight of the kidney concerning the total mass of the body is by

        A. 0.01
        B. 0.02
        C. 0.1
        D. 0.12


MCQ 28: The regional temperature differences within an animal are obtained by

        A. vasodilatation only
        B. vasoconstriction only
        C. vasocirculation
        D. vasodilation and vasocontriction


MCQ 29: Smooth muscles are not under

        A. voluntary control
        B. spontaneous control
        C. conscious control
        D. involuntary control


MCQ 30: The homeostatic thermostat which facilitates the process of thermoregulation in man is present in

        A. cerebrum
        B. thalamus
        C. hypothalamus
        D. medulla


MCQ 31: The ammonia is converted into the less toxic product in the restricted supply of water which is

        A. urea
        B. ammonia
        C. uric acid
        D. urine


MCQ 32: The nitrogenous wastes are in the form of

        A. uric acid
        B. ammonia
        C. urea
        D. all of above


MCQ 33: The metabolites of nitrogenous nature are eliminated from the body by a process

        A. absorption
        B. reabsorption
        C. excretion
        D. transpiration


MCQ 34: The gradual osmotic flow from filtrate back into the kidney as it moves down in loop of henel is via the mechanism of

        A. counter current multiplier
        B. current multiplier
        C. counter multiplier
        D. current counter multiplier


MCQ 35: The animals which absorb heat from surrounding are called as

        A. endotherms
        B. ectotherms
        C. heterotherms
        D. hypotherms


MCQ 36: Hypertonic environment results in loss of water and ultimately the cell

        A. die
        B. wilt
        C. shrink
        D. turgid


MCQ 37: The layer of connective tissue which surrounds the synovial joints is called

        A. ligament
        B. fibrous capsule
        C. synovial capsule
        D. tendon


MCQ 38: The increase muscles contraction along with the increasing rate of heat production is called

        A. shivering thermogenesis
        B. non-shivering thermogenesis
        C. overlapping hypogenesis
        D. underweighted osmogenesis


MCQ 39: Osmoregulators excrete salts through

        A. fins
        B. gills
        C. bladder
        D. scales


MCQ 40: In cockroach, the rectum reabsorbs maximum salts and water hence excretory products are in the form of

        A. urea
        B. uric acid
        C. ammonia
        D. urine


MCQ 41: Urea cycle needs two molecules of ammonia and one molecule of carbon dioxide to generate one molecule of

        A. uric acid
        B. urea
        C. ammonia
        D. urine


MCQ 42: The animal which uses saliva and urine for cooling is

        A. lizard
        B. cats
        C. bears
        D. bats


MCQ 43: Elevated levels of nitrogenous wastes can lead to

        A. convulsions
        B. coma
        C. death
        D. all of above


MCQ 44: The gardener find Autumn fallen leaves due to the presence of good

        A. minerals
        B. chlorophyll
        C. salts
        D. sugars


MCQ 45: Animals have a basic instinct to control heat gain by adjusting their

        A. thermostat
        B. posture
        C. temperature
        D. respiration


MCQ 46: The condition in which palatine processes of maxilla and palatine fail to fuse and leads to interferences while inhaling food and ultimately causing aspiration pneumonia is

        A. Microcephaly
        B. Arthritis
        C. Cleft palate
        D. Osteoarthritis


MCQ 47: The number of facial bones is

        A. 12
        B. 14
        C. 16
        D. 8


MCQ 48: The non-surgical removal of kidney stones is the technique called

        A. Lithotripsy
        B. dialysis
        C. shock waves
        D. none of others


MCQ 49: The evaporating cooling in physiologically adapted animals is done by activation of

        A. lymphatic system
        B. sweat glands
        C. respiration
        D. excretion


MCQ 50: Soft callus grow in hematoma to clear up

        A. debris
        B. vitamin-D
        C. cartilage
        D. fracture


MCQ 51: The functional and structural unit of kidneys is

        A. flame cell
        B. nephrons
        C. neuron
        D. alveoli


MCQ 52: The transfer of heat out to the environment is done by

        A. radiation only
        B. evaporation only
        C. vaporisation
        D. radiation and evaporation


MCQ 53: The skeletal muscles are attached to the bone by a bundle of collagen and non-elastic fibers called

        A. tendons
        B. filaments
        C. cartilage
        D. hoofs


MCQ 54: Each muscle fiber is composed of a large number of

        A. myofibrils
        B. fibrils
        C. tendons
        D. ligaments


MCQ 55: In Osteoporosis, the mass of bone is reduced and is caused by low levels of

        A. estrogen
        B. calcium
        C. vitamin-D
        D. minerals


MCQ 56: Upon foreign invasion, the blood cells produce chemicals called

        A. pathogens
        B. pyrogens
        C. receptors
        D. effectors


MCQ 57: Drinking water and eating, moist food can compensate for the loss of water in animals that are

        A. terrestrial
        B. fresh water
        C. marine
        D. all of above


MCQ 58: The hip joint is formed by hip bone by a proximal bone

        A. tibia
        B. fibula
        C. femur
        D. humerus


MCQ 59: The regulation of solute and balance of water is done by

        A. homeostasis
        B. thermoregulation
        C. osmoregulation
        D. diffusoregulation


MCQ 60: Removal of excess salts from the body is done by the help of

        A. sweat glands
        B. sebaceous glands
        C. mammary glands
        D. all of above


MCQ 61: The scapula is connected to the sternum via

        A. clavicle
        B. fore limb
        C. appendages
        D. pectoral girdle


MCQ 62: In juxtamedullary nephrons, additional capillaries extend down from loop of henel and termed as

        A. vasa recta
        B. renal hilus
        C. loop of henel
        D. distal part


MCQ 63: The tubular epithelium releases substances into the lumen, which balances pH is

        A. carbohydrates
        B. calcium ions
        C. hydrogen ions
        D. nitrogen ions


MCQ 64: The unpaired facial bones are

        A. mandible only
        B. vomer only
        C. radius
        D. mandible and vomer


MCQ 65: Hinge joint and ball and socket joint are examples of

        A. immovable joints
        B. movable joints
        C. freely movable joints
        D. fix joints


MCQ 66: Which is right about water?

        A. universal solvent
        B. base
        C. acid
        D. universal solute


MCQ 67: The rib cage is composed of how many pairs of ribs?

        A. 12
        B. 14
        C. 10
        D. 8


MCQ 68: In insects, there is no structural or functional relationship between excretory or digestive system except in

        A. earthworm
        B. cockroach
        C. lizards
        D. ants


MCQ 69: The function of nephridiostome is to collect

        A. coelomic fluid
        B. collect waste material
        C. surround nephridia
        D. collect useful material


MCQ 70: Heat shock proteins encircle enzymes as self-defense and protect the plant against temperature above

        A. 10 °C
        B. 20 °C
        C. 30 °C
        D. 40 °C


MCQ 71: The central metabolic cleaning house which is the central station of metabolism as well is

        A. kidney
        B. lungs
        C. heart
        D. liver


MCQ 72: When two bones meet, there occurs a

        A. appendages
        B. joint
        C. space
        D. multistage


MCQ 73: The heads join thick and thin myofilament hence sometimes regarded as

        A. cross bridges
        B. bridges
        C. polypeptide complex
        D. A-band


MCQ 74: Liver functions are pivotal to

        A. homeostasis
        B. thermoregulation
        C. osmoregulation
        D. thalassemia


MCQ 75: The technique in which high concentration X-rays are directed towards stones from outside of the body is

        A. Eletracorporeal shock wave lithotripsy
        B. lithotripsy
        C. Dialysis
        D. Photolysis


MCQ 76: The filtration of blood takes place in

        A. Bowman's capsule
        B. renal hilus
        C. loop of henel
        D. distal part


MCQ 77: The mass of the clotted blood in a broken bone is called

        A. callus
        B. hematoma
        C. humus
        D. hemorrhage


MCQ 78: The release of the amino group during catabolism of amino acids is called

        A. ammunition
        B. hydrolysis
        C. deamination
        D. hydration


MCQ 79: Dogs have specialized evaporative cooling inside the respiratory tract by

        A. licking
        B. sleeping
        C. panting
        D. woofing


MCQ 80: The vertebral column provides more strength due to 4

        A. curvatures
        B. frontals
        C. appendages
        D. burantals


MCQ 81: The active uptake of sodium is promoted by the action of an enzyme called

        A. antidiuretic
        B. diuretic
        C. aldosterone
        D. adrenatrone


MCQ 82: Axial skeleton and appendicular skeleton are parts of

        A. human skeleton
        B. molluscus
        C. annelids
        D. snail


MCQ 83: Leaves fall of helping in the plant to get rid of accumulated wastes hence called

        A. helper
        B. sacrifice
        C. excretophore
        D. ebony


MCQ 84: Kidneys receive 20% of blood with each

        A. urea cycle
        B. cardiac beat
        C. cardiac cycle
        D. ovulatory cycle


MCQ 85: In the case of uremia, the only treatment left is

        A. kidney transplant
        B. lithotripsy
        C. dialysis
        D. lung transplant


MCQ 86: Glomerulus circulates the blood via

        A. afferent arterioles
        B. efferent arterioles
        C. afferent venule
        D. efferent venule


MCQ 87: The maintenance of internal temperature within a tolerable range is called

        A. Osmoregulation
        B. thermoregulation
        C. homeostasis
        D. none of others


MCQ 88: Hypotonic environment leads to cell towards

        A. concentration
        B. turgidity
        C. wilting
        D. shrinking


MCQ 89: When the internal environment is concentrated due to external change this is

        A. hypertonic environment
        B. hypotonic environment
        C. isotonic environment
        D. hyperactive environment


MCQ 90: Muscles are composed of which?

        A. actin only
        B. myosin only
        C. insulin
        D. actin and myosin


MCQ 91: Nephrons have extensive blood supply by

        A. renal veins
        B. renal arteries
        C. hepatic arteries
        D. peritoneal veins


MCQ 92: The muscles which are called striped, striated and voluntary are

        A. smooth muscles
        B. cardiac muscles
        C. skeletal muscles
        D. rough muscles


MCQ 93: A cellular which capped the body throughout have specialized cells called as

        A. nephridiophore
        B. nephrostome
        C. cnidarians
        D. flame cells


MCQ 94: In mammals, the main key role for thermoregulation has been adapted by

        A. nails
        B. skin
        C. hairs
        D. all of above


MCQ 95: The capacity to tolerate dehydration in animals is termed as

        A. hydrobiosis
        B. anhydrobiosis
        C. hydrobiosis
        D. none of others


MCQ 96: The walls of the glomerulus are

        A. permeable
        B. porous
        C. semi permeable
        D. close


MCQ 97: The conversion of stones into sand or minute pieces after shock wave treatment are passed out in

        A. sweat
        B. urine
        C. secretions
        D. lacerations


MCQ 98: The evolutionary adaptations of nitrogenous wastes are

        A. ammonotelic only
        B. ureotelic only
        C. hydrotelic
        D. ammonotelic and ureotelic


MCQ 99: Sarcoplasm of the skeletal muscles fiber is composed of

        A. glycogen only
        B. myoglobin only
        C. globulin
        D. glycogen and myoglobin


MCQ 100: Cranium consists of 8 bones in which

        A. 2 unpaired, 4 paired
        B. 4 unpaired, 2 paired
        C. 2 unpaired, 3 paired
        D. 6 unpaired,1 paired


MCQ 101: Which is true about Cardiac muscles?

        A. striated only
        B. involuntary only
        C. voluntary
        D. striated and involuntary


MCQ 102: Two long polypeptide chains coiled together to form

        A. myosin tail
        B. actin tail
        C. frectin tail
        D. none of others


MCQ 103: Arthritis is chronic in

        A. osteoarthritis
        B. rheumatoid arthritis
        C. gouty arthritis
        D. all of above


MCQ 104: Uric acid is an excretory product of animals from

        A. reptiles only
        B. birds only
        C. amphibians
        D. reptiles and birds


MCQ 105: The metabolic pathway in the production of urea from nitrogenous waste is known as

        A. Krebs cycle
        B. ammonia cycle
        C. urea cycle
        D. urea cycle


MCQ 106: Disc slip can be treated by

        A. bed rest
        B. traction
        C. painkiller
        D. all of above


MCQ 107: The plant which shed its leaves to restrict transpiration is

        A. rose
        B. balsam
        C. cacti
        D. conifer


MCQ 108: Kidneys remove nitrogenous wastes and act as a

        A. excretory product
        B. Osmoregulators organ
        C. osmoconformers
        D. thermoregulatory organs


MCQ 109: The fusion of the vertebral joint causing immobility is

        A. rickets
        B. sciatica
        C. spondylosis
        D. Arthritis


MCQ 110: All living things undergo one of the essential property to remove waste material is

        A. digestion
        B. excretion
        C. respiration
        D. regulation


MCQ 111: The animals which excrete uric acid are called as

        A. ammonotelic
        B. ureotelic
        C. uricotelic
        D. urinotelic


MCQ 112: Freshwater animals are in contact mode of hydration with loss of

        A. nutrients
        B. salts
        C. potassium
        D. carbon


MCQ 113: One gram of ammonia to be excreted need water of about

        A. 400ml
        B. 100ml
        C. 500ml
        D. 250ml


MCQ 114: The technique in which blood is circulated through dialyzer is known as

        A. peritoneal dialysis
        B. hemodialysis
        C. renal dialysis
        D. all of above


MCQ 115: The bones bend and deform due to lack of calcium salts deposition and lead to

        A. Osteomalacia
        B. hypercalcemia
        C. hypocalcaemia
        D. Osteoporosis


MCQ 116: In the case of acute shortage of water, animals convert wastes into an excretory product which requires a minimum amount of water which is

        A. urea
        B. ammonia
        C. uric acid
        D. ammonium nitrate


MCQ 117: The mammalian kidney is specialized to conserve water above

        A. 0.7
        B. 0.81
        C. 0.995
        D. 0.934


MCQ 118: The anterior five vertebrae fuse to form

        A. sacrum
        B. coccyx
        C. embryo
        D. zygote


MCQ 119: The elimination of nitrogenous waste from the body constitutes

        A. digestion
        B. elimination
        C. excretion
        D. regulation


MCQ 120: Coxal bone is composed of which of the following?

        A. ilium
        B. ischium
        C. pubis
        D. all of above


MCQ 121: The elevated levels of calcium in blood lead towards

        A. hypocalcaemia
        B. hypercalcemia
        C. hyperoxaluria
        D. hypertension


MCQ 122: The acute form of Arthritis can be treated by

        A. Estrogen Replacement Therapy
        B. sun exposure
        C. surgery
        D. antibiotics


MCQ 123: 50 ml of water is needed to remove nitrogen in urea that is

        A. 1g
        B. 2g
        C. 3g
        D. 0.5g


MCQ 124: If the glomerulus part of nephrons is destroyed by pathogens, it results in the elevated levels of urea and nitrogenous waste in

        A. plasma level
        B. blood vessels
        C. capillaries
        D. veins


MCQ 125: Which is true about smooth muscles?

        A. visceral
        B. non-striated
        C. involuntary
        D. all of above


MCQ 126: Animals which generate heat on their own during metabolism are

        A. ectoderms
        B. exotherms
        C. endotherms
        D. self ectotherms


MCQ 127: The stabbing paint due to injury of the proximal sciatic nerve is a disease

        A. rickets
        B. sciatica
        C. spondylosis
        D. arthritis


MCQ 128: The process of reabsorption of useful constituents is done in

        A. distal tubules
        B. loop of henel
        C. proximal tubules
        D. bowman's capsule


MCQ 129: The specialized salt excreting organs are

        A. mammary glands
        B. secretory glands
        C. anorectal glands
        D. rectal glands


MCQ 130: It is believed that hyponasty is due to

        A. auxin
        B. gibberellins
        C. albumin
        D. globulin


MCQ 131: The nephrons which are arranged along the border of medulla looping deep in the inner medulla are called

        A. cortical nephrons
        B. medullar nephrons
        C. juxtamedullary nephrons
        D. pyramidal nephrons


MCQ 132: The remodeled area of bone responds to the same set of mechanical

        A. movements
        B. stimuli
        C. receptors
        D. effectors


MCQ 133: The muscles which control the urine inside and help in urination while passing it out are

        A. glands
        B. sphincters muscles
        C. abdominal muscles
        D. thigh muscles


MCQ 134: The internal ciliated opening which is immersed in a coelomic fluid is called

        A. nephridiophore
        B. nephridiostome
        C. cnidarians
        D. flame cells


MCQ 135: The size of the skull is reduced due to genetic disorder is

        A. Microcephaly
        B. Arthritis
        C. Cleft palate
        D. Osteoarthritis


MCQ 136: Sebaceous glands protect skin against microorganism by secreting

        A. sebum
        B. sweat
        C. salts
        D. water


MCQ 137: The components of the internal environment are

        A. water
        B. solutes
        C. temperature
        D. all of above


MCQ 138: The total number of vertebrae in a vertebral column is

        A. 33
        B. 23
        C. 32
        D. 30


MCQ 139: Ball and socket joint is formed by the bone

        A. humerus
        B. ulna
        C. radius
        D. phalanges


MCQ 140: Earthworm posses another type of tubular excretory system called as

        A. protonephridium
        B. metanephridium
        C. malpighian tubules
        D. all of above


MCQ 141: The lower two pairs of ribs are not attached to the sternum and called as

        A. rising ribs
        B. floating ribs
        C. hovering ribs
        D. hanging ribs


MCQ 142: The row of phalanges are attached to metacarpals which support

        A. wrist
        B. fingers
        C. knee
        D. elbow


MCQ 143: The displacement of a set point in the hypothalamus is due to

        A. pathogens
        B. pyrogens
        C. receptors
        D. effectors


MCQ 144: Mammals maintain a constant temperature range, which is about

        A. 37-38 °C
        B. 36-38 °C
        C. 37-38 °C
        D. 37-39 °C


MCQ 145: The nephrons are arranged in a distinct region of

        A. cortex
        B. medulla
        C. calyx
        D. pelvis


MCQ 146: In the rainy season, the part of the plant act as photosynthetic organ and stores water is

        A. root
        B. stem
        C. flower
        D. seed


MCQ 147: The cleaning of blood is termed as

        A. peritoneal dialysis
        B. hemodialysis
        C. ectodialysis
        D. hypo dialysis


MCQ 148: The tuft of cilia propels interstitial fluid into

        A. tentacles
        B. septum
        C. nucleus
        D. tubular system


MCQ 149: Animals and plants have distributed themselves in a wide range of habitats due to

        A. osmoregulation
        B. thermoregulation
        C. glucoregulation
        D. none of others


MCQ 150: Rickets is the disease which deforms pelvis and bow legs of mostly

        A. children
        B. animals
        C. aged women
        D. aged men


MCQ 151: In the earthworm excretory system, the epithelium reabsorbs salts from

        A. septum
        B. capillary network
        C. bladder
        D. lumen


MCQ 152: The components of living control system are

        A. receptor
        B. control center
        C. effectors
        D. all of above


MCQ 153: There are extensive stomata on the upper surface of leaves in

        A. geophytes
        B. bryophytes
        C. hydrophytes
        D. xerophytes


MCQ 154: The hormone aldosterone is secreted by the

        A. cortical nephrons
        B. renal cortex
        C. adrenal cortex
        D. medullary cortex


MCQ 155: Skull, the vertebrae, ribs, and the sternum together make up

        A. Appendicular skeleton
        B. Axial skeleton
        C. Dorsal skeleton
        D. Ventral skeleton


MCQ 156: Poikilotherms fluctuate more or less with

        A. ambient temperature
        B. heat shock proteins
        C. hydrostatic temperature
        D. thermal static temperature


MCQ 157: Hind limbs consist of which of these?

        A. appendages only
        B. pelvic girdle only
        C. axon
        D. appendages and pelvic girdle


MCQ 158: Most land mammals used to raise their fur to block still air hence protect themselves against

        A. hot
        B. cold
        C. pressure
        D. predators


MCQ 159: The waste material is generated through metabolism, hence are termed as

        A. metabolic wastes
        B. catabolic wastes
        C. anabolic wastes
        D. Integrated waste


MCQ 160: The cartilaginous joint which is found in a growing bone is called

        A. fibrous cartilage
        B. synovial cartilage
        C. hinge cartilage
        D. Hyaline cartilage


MCQ 161: The inverse response from effectors towards external change is called

        A. positive feedback
        B. negative feedback
        C. neutral feedback
        D. no feedback


MCQ 162: In animals, with structural adaptations, have sweat glands and lungs for

        A. excretion
        B. respiration
        C. panting
        D. loss of water


MCQ 163: In the adequate or surplus supply of water, the reabsorption in kidneys is

        A. reduced
        B. enhanced
        C. increase
        D. neutral


MCQ 164: The ball of capillaries which surrounds the Bowman's capsule is called

        A. glomerulus
        B. Bowman's capsule
        C. medulla
        D. Bowman's man


MCQ 165: Urea in high concentration may cause damage to fishes so they retain a protecting chemical against urea called

        A. trimethyloxide
        B. methyl oxide
        C. hydrogen oxide
        D. hydrogen peroxide


MCQ 166: The animals which do not require to adjust osmotic state concerning their external environment, are termed as

        A. osmoregulators
        B. osmoconformers
        C. thermoregulators
        D. thermoconformers


MCQ 167: Harmful chemicals and toxins are disposed of from the body by the help of

        A. lungs
        B. kidneys
        C. liver
        D. all of above


MCQ 168: An animal which can survive in drastic conditions of the desert by feeding on seeds of plants containing more carbohydrates is

        A. camel
        B. Scorpio
        C. kangaroo rat
        D. none of others


MCQ 169: Bats and hummingbirds belong to which group?

        A. endotherms
        B. ectotherms
        C. heterotherms
        D. hypotherms


MCQ 170: Which one is the Planarian excretory system?

        A. protonephridium
        B. metanephridium
        C. Malpighian tubules
        D. etanephridium


MCQ 171: The 14 phalanges of the toe are attached to

        A. metacarpals
        B. metatarsals
        C. carpals
        D. tarsals


MCQ 172: The metabolism of purine and pyrimidine results in the formation of a significant amount of

        A. xanthine, hypoxanthine
        B. uric acid, allantoin
        C. urea, ammonia
        D. all of above


MCQ 173: The most toxic excretory product which quickly dissolves in body fluids is

        A. urea
        B. ammonia
        C. uric acid
        D. creatine


MCQ 174: The cells of plants in deficiency of water synthesize large quantities of proteins called

        A. lipo proteins
        B. heat shock proteins
        C. heat protein
        D. glycol proteins


MCQ 175: The best remedy against an osteoporotic bone fracture is

        A. Estrogen Replacement Therapy
        B. sun exposure
        C. surgery
        D. realignment


MCQ 176: In peritoneal dialysis, the peritoneal cavity is filled with dialysis fluid through a

        A. valve
        B. catheter
        C. sphincter
        D. pump


MCQ 177: Less amount of nitrogen is present in

        A. creatinine
        B. creatine
        C. trimethylamine oxide
        D. all of above


MCQ 178: Mammals have a special organ for rapid heat production called

        A. yellow fat
        B. brown fat
        C. grey fat
        D. white fat


MCQ 179: The tube by which urine is passed outside the body is called

        A. pelvis
        B. urinary bladder
        C. urethra
        D. ureter


MCQ 180: The inner end of nephrons is a cup-shaped swelling structure known as

        A. glomerulus
        B. Bowman's capsule
        C. medulla
        D. Bowman's net


MCQ 181: Amoeba and paramecium possess a specialized structure for removing water from the body, called

        A. contractile vacuoles
        B. flagella
        C. pseudopodia
        D. ligament


MCQ 182: Homeostasis contributes to the evolutionary process by compelling

        A. adaptations
        B. regeneration
        C. erosion
        D. fluctuations


MCQ 183: The system which is responsible for detecting change and signaling control system is called

        A. control system
        B. feedback mechanism
        C. osmoregulation
        D. thermoregulation


MCQ 184: Skull is made up of which of these?

        A. cranium
        B. facial bones
        C. cartilage
        D. none of others


MCQ 185: The presence of metabolic waste in the body can cause serious hazards hence they should be

        A. retained
        B. consumed
        C. eliminated
        D. recycled


MCQ 186: The old xylem when not being used to transport deposit strange chemicals which take place in

        A. conifers
        B. ebony
        C. oak
        D. none of others


Answer Key



1. A           2. B           3. A           4. C           5. A           
6. C           7. B           8. A           9. D           10. B           
11. B         12. D         13. C         14. C         15. A         
16. A         17. D         18. B         19. B         20. A         
21. D         22. B         23. B         24. A         25. C         
26. A         27. A         28. D         29. A         30. C         
31. A         32. D         33. C         34. A         35. C         
36. C         37. B         38. A         39. B         40. B         
41. B         42. D         43. D         44. A         45. B         
46. C         47. B         48. A         49. B         50. A         
51. B         52. D         53. A         54. A         55. A         
56. B         57. A         58. C         59. C         60. A         
61. A         62. A         63. C         64. D         65. C         
66. A         67. A         68. B         69. A         70. D         
71. D         72. B         73. A         74. A         75. A         
76. A         77. B         78. C         79. C         80. A         
81. C         82. A         83. C         84. B         85. A         
86. C         87. B         88. B         89. A         90. D         
91. B         92. C         93. D         94. B         95. B         
96. B         97. B         98. D         99. D         100. B         
101. D       102. A       103. D       104. D       105. C       
106. D       107. C       108. B       109. C       110. B       
111. C       112. B       113. C       114. B       115. A       
116. C       117. C       118. A       119. C       120. D       
121. B       122. D       123. A       124. A       125. D       
126. C       127. B       128. C       129. D       130. B       
131. C       132. B       133. B       134. B       135. A       
136. A       137. D       138. A       139. A       140. B       
141. B       142. B       143. B       144. B       145. C       
146. B       147. B       148. D       149. A       150. A       
151. D       152. D       153. C       154. C       155. B       
156. A       157. D       158. B       159. A       160. D       
161. B       162. C       163. A       164. A       165. A       
166. B       167. C       168. C       169. C       170. A       
171. B       172. D       173. B       174. B       175. A       
176. B       177. D       178. B       179. C       180. B       
181. A       182. A       183. B       184. C       185. C       
186. B