Asked in PPSC, FPSC and other one-paper exams (compiled from unofficial resources).
Botany (Plant Biology)Photosynthesis & Plant Nutrition
It is dangerous to sleep under trees at night because plants give out _?
- A.Oxygen
- B.Carbon dioxideCorrect answer
- C.Nitrogen
- D.Water vapour
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Practice these MCQs in the appQuick fact: It is dangerous to sleep under trees at night because plants give out carbon dioxide during respiration in the absence of photosynthesis.