CIE iGCSE Co-Ordinated Science B17.2 Selection Exam Style Questions Paper 2
Question
The boxes show the steps involved in artificial selection of an animal species.
Which sequence of steps is correct?
(A) 2 → 1 → 4 → 3
(B) 2 → 4 → 3 → 1
(C) 4 → 3 → 2 → 1
(D) 4 → 2 →1 → 3
▶️Answer/Explanation
Ans : D
Question
In one area, two forms of peppered moth exist. One form is pale white with a black and grey pattern. The other form is completely black.
The diagram shows the changes in colour that have occurred in the peppered moth over a period of more than 200 years.
Which row shows what happened?
▶️Answer/Explanation
Ans : D
Question
Which process results in the development of strains of antibiotic-resistant bacteria?
A artificial selection
B discontinuous variation
C natural selection
D selective breeding
▶️Answer/Explanation
Ans : C
Question
A student writes down the statement shown.
‘Selective breeding by natural selection is carried out over many generations to improve crop plants and domesticated animals.’
The statement is not correct.
Which change makes the statement correct?
A Change crop plants to flowering plants.
B Change domesticated to wild.
C Change generations to offspring.
D Change natural to artificial.
▶️Answer/Explanation
Ans : D