The most primitive vertebrates are from Biology NEET Year 2012 F

Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

11.

Urea synthesis occurs in

  • kidney

  • Liver

  • Brain

  • Muscles


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


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16.

The most primitive vertebrates are

  • Ostracoderms

  • Cephalochordates

  • Placoderms

  • Cyclostomes


A.

Ostracoderms

Class-Ostracodermi of vertebrata includes most primitive vertebrates, e.g., Cephalaspis and Drepanaspis.


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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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