Free download Model Paper biology Homeostasis and Osmoregulation

Chapter  15     

Q 1. MCQs

        i.            The incidence of calcium phosphate type stone is ____%

      a)  10        b) 70           c) 15             d) none

      ii.             End stage of renal disease is called as

         a) Hyperglycemia    b) hypercalcemia   c) uremia     d) all of above

    iii.             Which of the following is a heterotherm?

      a) Bat         b) humming bird           c) both                  d) none

     iv.             Pyrexia has a relation with

         a) Pathogens   b) leukocytes    c) pyrogens       d) all of above

       v.             Which of the following is not an endoderm?

     a) Birds             b) amphibian           c) flying insect            d) mammals

     vi.             The more concentrated external environment as called as

    a) Hypotonic      b) hyperosmotic       c) both        d) none

   vii.            Excretion through metanephridia is carried out by

      a) Planaria       b) hydra                c) earthworm       d) none

viii.            Hemoglobin breakdown produces

     a) Bilurbin       b) uric acid              c) both         d) none

     ix.            Which of the following is irrelevant?

     a) Haemodialysis      b) dialyzer      c) artificial kidney    c) peritoneal cavity

       x.            Plants respond to cold stress by increasing proportion of

      a) Unsaturated fatty acids        b) proteins       c) both        d) none

     xi.            Which of the following is irrelevant?

a) Infrared thermal radiation b) direct sunlight c) reflected sunlight   c) evaporation

   xii.            Plumage fluffing is____adaptation

     a) Structural           b) behavioral c) physiological d) none

 xiii.            Which of the following is a homeostatic thermostat in human?

       a) Hypothalamus    b) kidney           c) adrenals                 d) none

 xiv.            The excretory structure that delivers urine from kidney to bladder

       a) Urethra            b) ureter               c) pelvis                      d) none

   xv.            Which of the following is irrelevant?

    a) Receptor      b) control centre    c) effector           d) promoter

 xvi.            The metabolism of muscle creatinine produces

     a) Creatinine      b) urea      c) both                        d none

xvii.            Which of the following is irrelevant?

a) Nephrostome b) nephridiopore c) malpighian tubules d) metanephridia

Question 2: Answer the followings briefly.

i.                    Why ammonia is excretory product of animals of hypotonic environment.

ii.                  What are vasa recta?

iii.                Why leaves of certain plants are called excretophores?

iv.                What are effects of ice crystal formation within cytoplasm?

v.                  What are ectotherms. Give examples?

vi.                What is non-shivering thermogenesis?

vii.              How marine whales inhibit much cold water?

viii.            What is extracorporeal shock wave lithotripsy?

ix.                In maples cytosol have no ice crystal formation.

a.      KEY

xviii.            1)  c   2)   c3)   c   4)    d  5)  b  6)  d 7) c   8) a    9)  d 10) a  11) d    12)c   13) a  14) b  15) d  16) a  17) c