Haritha,SUBJECT MATTER EXPERT at Edumarz
Solution:Yes, I totally agree with this statement.Variations are produced mainly by sexually reproducing organisms.With the help of different variations, these organisms are well adapted to themselves and also to the environment in which they live. They increase their chances of survival by adapting to their surroundings.If variations do not happen, organisms cannot survive in a particular environment during adverse conditions.
Variation
It is the process by which differences occurs among organisms by genetic and environmental factors.With the help of these variations organisms adapt to the environment they lives.Adaptations organisms evolve by variations helps in survival of organisms.Variations happens more in sexually reproducing organisms compared to asexually reproducing ones.In sexual reproduction DNA is copied from both the parents and fusion of male gamete and female gamete results in formation of zygote.In asexual reproduction only a single parent is involved.
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Advantages of variations
It leads to evolution
Increases survival of organisms
Disadvantages of variations
It may lead to harmful conditions like diseases
Evolution
Evolution of species occurs when changes happen in organisms.Variations are responsible for making changes in the population and these changes lead to evolution.