Question

''Variation is useful for the survival of species overtime but the variants have unequal chances of survival''. Explain the statement.

Answer 1

Answer:

Variations which are favourable, increase the chances of survival of the species. It forms the basis of evolution e.g. If an organism can withstand a little higher temperature, then the variation goes on accumulating in its future generations. Hence, these organisms can survive when there is sudden rise in the temperature.This ensures the survival of the species. But some other organisms (variants) without this variation of heat resistance may not survive due to sudden rise in temperature. So, variation is beneficial to the species, but not necessarily for individual.

Answer 2

Explanation:

Variation in a organism is a gradual process

For a reference if a sudden change in an organism takes place which acquires a gud place in an ecosystem then it may lead to large scale wiping out of an organism hence its very important that there must be a gradual change among organism to cancel out the probability of wiping out

However variation can be beneficial as well as fatal too for eg:

If there is a group of red lady bugs

Variation occurs and green lady bugs are given birth hence they'll hav an advantage of being safe from their predators as their ability of being green make them merge with the surroundings

Here variation is beneficial

But if a blue lady bug takes birth it won't benefit the group as they can be easily detectable by their predators hence here variation has occurred but hasn't contributed in their survival from their predators therefore here variation is proven to be not beneficial

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