WAEC Biology 2020 Objective — Question 10

In an experiment, mould and yeast cells were transferred into an environment with low oxygen concentration. After a few days, the mould died while the yeast cells did not. Which of the following statements best explains the above 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 oxygenCorrect
• D. respiration does not occur in the mould