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JAMB Biology 1980 Question 35

Question 35

Respiration

Fig. 4: Respiration in plants
The lime water in container C turned milky because

Diagram for this question
  1. A.carbon dioxide was produced by plant B during respiration
  2. B.carbon dioxide entered C through the filter pump
  3. C.oxygen reacts with lime water to produce milkiness
  4. D.soda lime did not remove carbon dioxide from air
  5. E.the delivery tubes were not well connected.
Show the answer and explanation

Answer: A (carbon dioxide was produced by plant B during respiration)

Explanation

The air reaching the plant had its CO2 removed (soda lime, lime water A), so the CO2 that turned lime water C milky came from the plant's respiration.