Sample Test Biology

1
The virus which is responsible for AIDS is typically known as
  • 1 HBV .
  • 2 HIV
  • 3 HCV
  • 4 HAV
2
The plants which have been infused foreign DNA into their cells are
  • 1 genetic plants
  • 2 unicellular plants
  • 3 multicellular plants
  • 4 transgenic plants
3
When an early embryo or single egg divides into one or more separate embryos, it gives birth to
  • 1 nonidentical twins
  • 2 identical twins
  • 3 triplets
  • 4 singles
4
Evolutionary changes help in producing new
  • 1 individuals
  • 2 communities
  • 3 species
  • 4 plants
5
A change in evolution give rise to the increase in
  • 1 biodiversity
  • 2 population
  • 3 community
  • 4 geological periods
6
A walnut tree can be saved from attack of aphid biologically by a parasite
  • 1 wasp
  • 2 bee
  • 3 leech
  • 4 lice
7
In 1797, vaccination was first developed by
  • 1 Edward Jenner
  • 2 F. Sanger
  • 3 F.Miescher
  • 4 Erwin
8
The number of chemical compounds from which living organisms are made is
  • 1 92
  • 2 16
  • 3 20
  • 4 108
9
Gene therapy repairs defective genes by isolating normal gene and inserting it into host's
  • 1 veins
  • 2 normal cells
  • 3 liver
  • 4 bone marrow
10
All the members of a clone are genetically identical until and unless there occurs a
  • 1 transfer
  • 2 fertilization
  • 3 mutation
  • 4 change

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