Can CO2 be Beneficial for Plants?
In a study conducted to monitor CO2 levels in greenhouses, a significant increase in plant growth and yield was observed when CO2 levels were doubled. However, the same study noted a substantial rise in temperature inside the greenhouse. What could be the potential reasons behind this observation and what does it imply for climate change mitigation strategies?
1 Answer
📌 CONCEPT: Carbon dioxide (CO2) can be beneficial for plants as it is a reactant in photosynthesis, promoting plant growth and yield, but excessive CO2 levels can lead to increased temperature and potentially harm plants.
📐 RULE / FORMULA: In a photosynthetic reaction, CO2 reacts with water and light energy to produce glucose and oxygen: 6CO2 + 6H2O + light energy → C6H12O6 (glucose) + 6O2.
💡 WORKED EXAMPLE: In a greenhouse with doubled CO2 levels, a 10% increase in light energy is used for photosynthesis. If the initial CO2 concentration is 300 ppm, calculate the new CO2 concentration. Assuming a direct linear relationship, the new CO2 concentration would be (300 + 0.1*300) ppm, which equals 330 ppm.
⚠️ COMMON MISTAKE: Students often overlook the role of temperature in plant growth and assume that increased CO2 levels always lead to enhanced plant growth, ignoring potential temperature-related limitations.
01 Oct 26
🔗 More from Environmental Chemistry
Practice this chapter
Get AI-generated board exam questions, track your mastery, and identify weak spots.
Start Free →