Question

Why is variation beneficial to species but not necessarily for the individual?

Answer 1

Variations are beneficial to the species than individual because sometimes for a species, the environmental conditions change so drastically that their survival becomes difficult. For example, if the temperature of water increases suddenly, then most of the bacteria living in that water would die. Only few variants that are resistant to heat would be able to survive. However, if these variants were not there, then the entire species of bacteria would have been destroyed. Thus, these variants help in the survival of the species. However, all variations are not necessarily beneficial for the individual organisms.

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Answer 2

The points are :-

• Variations are beneficial for the survival of species. The population of a group of organisms reside in well-defined places in the ecosystem, using their ability to reproduce.

• However, places can change because of reasons beyond the control of organisms, example: climatic change and water level changes.

• If the population of reproducing organisms are not suited to a particular place or if the place is drastically altered due to environmental changes, the population can be wiped out

                                                                                                                                                       

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