1
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
The Ti plasmid is often used for making transgenic plants. This plasmid is found in
A
Agrobacterium
B
Rhizobium of the roots of leguminous plants
C
Azotobacter
D
Yeast as a 2 µm plasmid
2
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
Certain characteristic demographic features of developing countries are -
A
High fertility, low or rapidly falling mortality rate, rapid population growth and a very young age distribution
B
High mortality high density, uneven population growth and a very old age distribution
C
High fertility, high density, rapidly rising mortality rate and very young age distribution
D
High infant mortality, low fertility, uneven population growth and a very young age distribution
3
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
What is a keystone species ?
A
A dominant species that constitutes a large proportion of the biomass and which affects many other species
B
A species which makes up only a small proportion of the total biomass of a community, yet has a huge impact on the community's organization and survival
C
A common species that has plenty of biomass, yet has a fairly low impact on the community's organization
D
A rare species that has minimal impact on the biomass and on other species in the community
4
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
The maximum growth rate occurs in :-
A
Exponential phase
B
Stationary phase
C
Senescent phase
D
Lag phase
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