Waec Biology Past Questions and Answers

Question 2021:

• WAEC 2020

In an experiment, mould and yeast cells were transferred into an environment with low oxygen concentration. After a few days, the mould dies while the yeast cells did not. Which of the following statements best explains the following observation.

A. The yeast cells carried out photosynthesis while the mould did not
B. Photosynthesis does not take place in the absence of oxygen
C. Respiration can take place in yeast cells in the absence of oxygen
D. Respiration does not occur in the mould

Question 2022:

• WAEC 2020

The cell as the basic unit of life consists of

A. Cell wall and vacuole
B. Nucleus and cell wall
C. Cytoplasm and nucleus
D. Cytoplasm and vacuole

Question 2023:

• WAEC 2020

Use the following Classes of Arthropoda to answer the question below
I. Crustacea II. Insecta III. Arachinda IV. Chilopoda

Which members of the classes live mainly in an aquatic habitat?


A. I
B. II
C. III
D. IV

Question 2024:

• WAEC 2020

Use the following Classes of Arthropoda to answer the question below
I. Crustacea II. Insecta III. Arachinda IV. Chilopoda

Which of the classes is characterised by the possession of two pairs of antennae?

A. I
B. II
C. III
D. IV

Question 2025:

• WAEC 2020

The organism with spiral chloroplasts and nucleus suspended by cytoplasmic strands is

A. Volvox
B. Spirogyra
C. Paramecium
D. Euglena