Question

What are the factors that affect photosynthesis?

Answer 1

Photosynthesis:

1. Photosynthesis is the process of conversion of light energy (sunlight) into chemical energy (food) by using carbon dioxide, water and chlorophyll as raw materials.
2. Oxygen is evolved as a by-product of the process.
3. 6 CO₂ + 12 H₂O → Glucose (C₆H₁₂O₆) + 6 H₂O + 6 O₂

Factors affecting the rate of photosynthesis:

1. Carbon dioxide: Increase in CO₂ concentration in air leads to an increase in rate of photosynthesis.
2. Water: Less water in the soil reduces the rate of photosynthesis.
3. Sunlight: If the intensity of the sunlight increases, rate of photosynthesis also increases.
4. Chlorophyll: Presence of green colored chlorophyll pigment in the chloroplast.

Final answer: Factors which affect the rate of photosynthesis are carbon dioxide, water, sunlight and chlorophyll.