In a water culture experiment, the culture solution in a transparent beaker turned green. What...
BIOLOGY
WAEC 1996
In a water culture experiment, the culture solution in a transparent beaker turned green. What precaution should have been taken to prevent the culture solution from turning green?
- A. Changing the culture solution regularly
- B. Increasing the number of times the culture is aerated
- C. Covering the transparent beaker with black cloth
- D. Adding warm alcohol to bleach the green colour
Correct Answer: C. Covering the transparent beaker with black cloth
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