Random genetic drift in a population probably results from
Constant low mutation rate
Large population size
Highly genetically variable individuals
Interbreeding within this population
Test-tube baby is one who
Is born out of artificial insemination
Has undergone development in a test tube
Is born out of the technique of fertilization in vitro
Has been developed without fertilization
Consider the statements given below regarding contraception and answer as directed thereafter
(A). Medical Termination of pregnancy (MTP) during first trimester is generally safe
(B). Generally chances of conception are nill until mother breast-feeds the infant upto two year
(C). Intrauterine devices like copper-T are effective contraceptives
(D). Contraception pills may be taken upto one week after coitus to prevent conception
Which two of the above statements are correct?
B,C
C,D
A, C
A,B
Which bacteria is utilized in gobar gas plant?
Methanogens
Nitrifyig bacteria
Ammonifying bacteria
Denitrifying bacteria
Certain characteristic demographic features of developing countries are
High fertility, low or rapidly falling mortality rate, rapid population growth and a very young age distribution
High fertility, high density, rapidly rising mortality rate and a very young age distribution
High infant mortality, low fertility, uneven population growth and a very young age distribution
High mortality, high density, uneven population growth and a very old age distribution
Genetic drift operates only in
Island populations
Smaller populations
Larger populations
Mendelian populations
Geometric representation of age structure is a characteristic of
Biotic community
Population
Landscape
Ecosystem
What is the most important factor for the success of animal population?
Natality
Unlimited food
Adaptability
Inter-species activity
Which of the following is non-symbiotic biofertilizer?
VAM
Azotobacter
Anabaena
Rhizobium
Which one of the following is being utilized as a source of bio-diesel in the Indian countryside?
euphorbia
beet root
sugarcane
pongamia.
