Question

Of 4 million bacteria feeding in an agar dish only 1 million survive to maturity and reproduce. Which of the following is an aspect of Darwin's theory which can best be applied to this observation? Please provide a short explanation as to why you that answer.

A. There is a struggle for existence among members of a species

B. Many variations of a species are inherited

C. All members of a species vary in their traits

D. Variations are inherited and in time great differences arise

Answer 1

Option A

The first option seems to be the most correct option because on a given nutrient media plate, there were 4 million bacteria but only 1 million provide to maturity and reproduced. It is because all the bacteria belong to single species and members of same species compete with each other for same resources and shelter. So the nutrients which were present in the nutrient media plate what the basis of competition between different individuals of the same bacterial species growing on the plate. This lead to the that of the most of the bacterial members because they were not able to win the competition for nutrients on the nutrient media plate.

Rest all the other option came to be incorrect because on the basis of number, initial number of bacteria and final number of bacteria, we cannot say anything about the variations which were inherited.

Please give a good rating.