Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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11.

Urea synthesis occurs in

  • kidney

  • Liver

  • Brain

  • Muscles


B.

Liver

The formation of urea from NH3, and CO2 Occurs in the liver. Through Ornithine cycle or Krebs Hansleit cycle. All the steps of this cycle are enzymatic and can be visualized as follows.


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12.

Which is common to kidney and skeleton in mammals?

  • Cortex

  • Medulla

  • Pelvis

  • Radius


13.

Which is regarded as the urinary bladder of the embryo?

  • Amnion

  • Allantois

  • Chorion

  • Yolk sac


14.

Deficiency of vitamin -B12 causes

  • Cheilosis

  • Thalassemia

  • Beri-Beri

  • Pernicious Anaemia


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15.

 Blood is a kind of

  • Areolar tissue

  • Connective tissue

  • Fluid connective tissue

  • Reticular connective tissue


16.

The most primitive vertebrates are

  • Ostracoderms

  • Cephalochordates

  • Placoderms

  • Cyclostomes


17.

Change in the number of body parts is called

  • Continuous variation

  • Discontinuous variation

  • Meristic variation

  • Substantive variation


18.

Branch of zoology dealing with the study of fishes is called

  • Arthrology

  • Ichthyology

  • Saurology

  • Herpetology


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19.

Theory of continuity of germplasm was propounded by

  • Mendel

  • Lamarck

  • Weismann

  • Haeckel


20.

The most active phagocytic white blood cells are

  • Neutrophils and eosinophils

  • Lymphocytes and macrophages

  • Eosinophils and lymphocyte

  • Neutrophils and monocytes


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