Which statement best describes natural selection?

Answer and explanation

Correct answer: B. Organisms with advantageous features survive and breed

  1. Step 1: Variation exists within a population.
  2. Step 2: Better-adapted individuals survive, reproduce and pass on favourable alleles.
Answer
Organisms with advantageous features survive and breed.
Why not the others: All organisms of a species have the same chances: this is false. Individuals change on purpose to suit their environment: adaptations arise by selection of variation. Only the largest organisms survive: size alone is not the rule.

Practise more Multicellular Organisms and Life on Earth.

Free questions with an explanation for every one, and full timed National 5 (Scotland) mock tests.