11th Class Biology MCQs with Answers download pdf Chapter No.1 Introduction

31. AIDS spread through one of the following methods?

  • Breathing near AIDS patients
  • Sexual relation after marriage
  • Sexual relation without marriage
  • Drinking contaminated water of the AIDS patient

Answer:
Sexual relation without marriage




32. The first ever clone of the vertebrate was prepared in 1997 in

  • England
  • Ireland
  • Scotland
  • U.S.A

Answer:
Scotland

33. The pollution can be reduced by the absorption of heavy metals from the environment by certain

  • Algae
  • Fungi
  • Bacteria
  • Protozoan

Answer:
Algae

34. The study of life in seas & oceans is ?

  • Oceanography
  • freshwater biology
  • Marine biology
  • aqua study

Answer:
Marine biology




35. The distribution of organisms in space can be studied through:

  • biomes
  • biosphere
  • ecosystem
  • none

Answer:
biomes

36. Cuttentyl number of known species are:

  • 1.5 million
  • 2.5 million
  • 3.0 million
  • 3.5 million

Answer:
2.5 million

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