NCERT Solution Class X Science How do Organisms Reproduce Question 2 (Ex 8.1)

Question 2:

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

Answer:

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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