Explanation
At night, plants do not perform photosynthesis due to the absence of sunlight.
They only carry out respiration, in which oxygen is consumed and carbon dioxide is released.
Therefore, sleeping under a tree at night is not advisable because carbon dioxide accumulates around the area.
Photosynthesis
Photosynthesis is the process by which green plants prepare food using sunlight, carbon dioxide, and water.
During this process, oxygen is released into the atmosphere.
Photosynthesis Equation
Carbon dioxide + Water + Sunlight → Glucose + Oxygen
Respiration in Plants
Plants respire both during day and night.
• Daytime → Photosynthesis dominates, oxygen is released.
• Nighttime → Only respiration occurs, carbon dioxide is released.
Important Related Concepts for Exams
Photosynthesis → Process of food production in plants
Respiration → Energy releasing process in living organisms
Chlorophyll → Green pigment responsible for photosynthesis
Stomata → Tiny pores in leaves for gas exchange
Atmospheric Gas Balance
Plants help maintain the balance of oxygen and carbon dioxide in the atmosphere through photosynthesis and respiration.