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CBSE

Subject

Biology
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NEET Biology : Locomotion and Movement

Multiple Choice Questions

21.

Match the items given in Column I with those in Column II and select the correct option given below

Column I Column II
a Glycosuria i Accumulation of uric acid in joints
b Gout ii Mass of crystallised salts within the kidney
c Renal calculi iii Inflammation in glomeruli
d Glomerular nephritis iv Presence of in glucose urine

  • a b c d
    iii ii iv i
  • a b c d
    i ii iii iv
  • a b c d
    iv i ii iii
  • a b c d
    ii iii i iv


22.

Out of 'X' pairs of ribs in humans only 'Y' pairs are true ribs. Select the option that correctly represents values of X and Y and provides their explanation :

  • X = 12, Y = 7
    True ribs are attached dorsally to vertebral column and ventrally to the sternum

  • X = 12, Y = 5
    True ribs are attached dorsally to vertebral column and sternum on the two ends

  • X = 24, Y = 7
    True ribs are dorsally attached to vertebral column but are free onventral side

  • X = 24, Y = 7
    True ribs are dorsally attached to vertebral column but are free onventral side



23.

Calcium is important in skeletal muscle contraction because it

  • Binds to troponin to remove the masking of active sites on actin for myosin.

  • Activates the myosin ATPase by binding to it.

  • Prevents the formation of bonds between the myosin cross bridges and the actin filament.

  • Detaches the myosin head from the actin filament.



24.

The contractile protein of skeletal muscle involving ATPase activity is

  • tropomyosin

  • myosin

  • α-actinin

  • α-actinin



25.

Which of the following is a flowering plant with nodules containing filamentous nitrogen-fixing micro-organism

  • casuarina equisetifolia

  • crotalaria juncea

  • cycas revoluta

  • cycas revoluta



26.

The pivot joint between atlas and axis is a type of

  • Fibrous joint

  • Cartilaginous joint

  • Synovial joint

  • Synovial joint



27.

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?

  • Incisors

  • Canines

  • Pre-molars

  • Pre-molars



28.

Which of the following is an example of negative feedback loop in humans?

  • constriction of skin blood vessels and contraction of skeletal muscles when it is too cold

  • secretion of tears after falling of sand particles into the eye

  • salivation of mouth at the sight of delicious food

  • salivation of mouth at the sight of delicious food



29.

Which of the following hormones can play a significant role in osteoporosis?

  • Aldosterone and Prolactin

  • Progesterone and Aldosterone

  • Parathyroid hormone and Prolactin

  • Estrogen and Parathyroid hormone



30.

In human body, which one of the following is anatomically correct?

  • Floating ribs - 2 pairs

  • Collar bones - 3 pairs

  • Salivary glands - 1 pair

  • Salivary glands - 1 pair



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