Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

1.

The 1st COfixation product of Cplant is

  • Oxaloacetic acid

  • ribulose biphosphate

  • phosphoenolpyruvate

  • phosphoglyceric acid.


2.

Which of the following genera is associated with coralloid roots?

  • Cycas

  • Taxus

  • Pinus

  • Sequoia


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3.

Cholesterol is a precursor for each of the following except

  • bile salts

  • vitamin D

  • insulin

  • steroids


C.

insulin

Cholesterol is a precursor of most steroid hormones like progesterone, estradiol, aldosterone, cortisol etc. Cholesterol forms vitamin D on UV exposure  and it also helps in forming bile salt


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4.

Match the following and select correct option.

  Column1        Column2

A. Pteris           1) Gymnosperm

B. Cycas           2) Bryophyte

C. Sphagnum    3) Algae

D. Sargassum   4) Pteridophyta

  • A-(4), B-(2), C-(1), D-(3)

  • A-(4), B-(1), C-(2), D-(3)

  • A-(2), B-(3), C-(4), D-(1)

  • A-(1), B-(4), C-(3), D-(2)


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5.

Which of the following groups of algae produces algin?

  • Phaeophyceae and Chlorophyceae

  • Rhodophyceae and Phaeophyceae

  • Chlorophyceae and Rhodophyceae

  • Phaeophyceae only


6.

Mature RBCs lose their ability for

  • DNA replication

  • Anaerobic respiration

  • Aerobic respiration and DNA replication

  • Aerobic respiration, DNA replication and RNA synthesising machinery


7.

Which one of the following is an incorrect combination

  • Adenine, thymine, cytidine

  • Adenine, cytosine, thymine

  • Guanine, thymine, uracil

  • Cytosine, uracil, guanine


8.

Hiccups can be best described as

  • forceful sudden expiration

  • forceful contraction of intercostal muscles during deep breathing

  • vibration of the soft palate during breathing while sleeping

  • jerky incomplete inspiration.


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9.

Which part of the nephrons is impermeable to water

  • Proximal convoluted tubule

  • Distal convoluted tubule

  • Ascending limb of loop of Henle

  • Descending limb of loop of Henle


10.

Gonadotropin releasing hormone is transferred to anterior pituitary by

  • left coronary artery

  • hypophysial portal veins

  • axons of neurosecretory cells

  • nuclei of hypothalamus


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