Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

41.

Process of maturation and development of sperms is called

  • oogenesis

  • spermatogenesis 

  • spermiogenesis

  • None of these


42.

AZT is the treatment of

  • malaria

  • AIDS

  • TB

  • kala-azar


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43.

Which of the following is a mismatch?

  • Amphetamine - a stimulant

  • Morphine - an opiate narcotic

  • LSD - a hallucinogen

  • Cocaine - a sedative/ tranquillizer


D.

Cocaine - a sedative/ tranquillizer

Sedative help to overcome mental irritability and excitement, assuage pain and lower the activity which leads to drowsiness or sleep, eg, barbiturates, furazepam, etc, while tranquilizers are drugs with calming and soothing effect, eg, diazepam, nitrazepam, etc. Cocaine is a local anaesthetic, vaso constrictor and powerful stimulant obtained from- dried leaves of Erythroxylon coca (coca plant). It is not a sedative or tranquilizer.


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44.

Which of the following is not related to sex chromosome X or Y?

  • Turner's syndrome

  • Klinefelter's syndrome

  • Down's syndrome

  • Haemophilia and colour bindness


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45.

A normal woman is married with a man having hypertrichosis condition. They got one daughter and one son. What is the possibility of this daughter to have hypertrichosis condition?

  • 0%

  • 25%

  • 50%

  • 100%


46.

Which of the following embryonic membranes structure is excretory in function?

  • Amnion

  • Allantois

  • Yolk sac

  • Vitelline chorion


47.

Which of the following is a mismatch?

  • Giraffe - Lamarck

  • Drosophila - Morgan

  • Galapagos island - Darwin's finches

  • Origin of species - Mendel


48.

Archaeopteryx is

  • a living fossil

  • a mammal

  • a connecting link between Annelida and Arthropoda

  • a connecting link between reptiles and birds


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49.

A woman has a haemophilic son and three normal children. Her genotype and that of her husband with respect to this gene would be

  • XX and XhY

  • XhXh and XhY

  • XhXh and XY

  • XhX and XY


50.

The causative agent of filaria is

  • Wuchereria bancrofti

  • Leishmania donovani

  • Plasmodium vivax

  • Trypanosoma gambiens


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