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Question
Some bacteria can grow in streptomycin containing medium due to
Some bacteria can grow in streptomycin containing medium due to
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Solution
The correct option is C Natural selection
Induced mutations arise due to exposure to environmental agents, radiations, chemical agents etc.
Natural selection is a process in which organisms which are better adapted to the environment survive and produce more offsprings.
When bacteria is grown in a medium containing streptomycin (antibiotic) the bacteria which are sensitive die but some develop variations due to random mutations which help them to survive in the streptomycin medium. These resistant bacteria reproduce and increase their population.
Reproductive isolation is a mechanism which results in speciation.
Mimicry is an adaptation in which an organism looks like another. Mimicry is used by many animals to avoid predators
Hence the correct option is
b. Natural selection
Induced mutations arise due to exposure to environmental agents, radiations, chemical agents etc.
Natural selection is a process in which organisms which are better adapted to the environment survive and produce more offsprings.
When bacteria is grown in a medium containing streptomycin (antibiotic) the bacteria which are sensitive die but some develop variations due to random mutations which help them to survive in the streptomycin medium. These resistant bacteria reproduce and increase their population.
Reproductive isolation is a mechanism which results in speciation.
Mimicry is an adaptation in which an organism looks like another. Mimicry is used by many animals to avoid predators
Hence the correct option is
b. Natural selection
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