Question

Principle of Natural selection stems from

• A. Eight observations and five inferences.
• B. Five observations and three inferences.
• C. Four observations and three inferences.
• D. Three observations and two inferences.

Answer 1

The correct option is B Five observations and three inferences.

Natural selection occurs only when if all the five main observations of natural selection are true for a population as :

1. Members of a population of the same species vary in their traits.
2. Traits can be inherited from parents to progenies.
3. Populations can produce more progenies than the environment can support.
4. Survival of progeny depends on the availability of food or other resources.
5. The rate of production of food and resources are less than the rate of population.

Based on the five observations following inferences were made:-
1. Individuals with inherited traits have a higher chance of survival and reproducing well in the environment.

2. Individual ability to survive and reproduce results in the preservation of favourable traits in the population over generations.

3. Natural selection acts on changes in the environment.

Thus, the correct answer is five observations and 3 inferences.