Biology 2020 Waec Past Questions and Answers

Question 6 :

• WAEC 2020

Which of the following statements best explains the reason why termites swarm at night?

A. Light is not necessary for swarming
B. They avoid day-flying birds
C. Light destroys their wings
D. They can only see in the dark

Question 7 :

• WAEC 2020

Who proposed the theory of evolution by natural selection

A. Darwin
B. Lamark
C. Aristotle
D. Linnaeus

Question 8 :

• WAEC 2020

Replication of DNA molecules is catalysed by an enzyme called

A. Polymerase
B. Ptyalin
C. Pepsin
D. Amylase

Question 9 :

• WAEC 2020

The diagram below is an illustrating of a cross between plants ! and B of the same species. Study it to answer the question below;


The process that gave rise to the F1 generation is

A. Self fertilization
B. Cross fertilization
C. Out-breeding
D. Test cross

Question 10 :

• WAEC 2020

The diagram below is an illustration of a cross between plants A and B of the same species. Study it and answer the question below;


If the F1 generation are plants with high yield and resistance, the genotype of the F1 generation plants would be

A. YYRR
B. YyRr
C. YyRr
D. Yyrr