Question

Rate of photosynthesis is dependent on which factors?

• A. Properties of light
• B. The amount of light
• C. Both (A) and (B)
• D. None of these

Hint:

Red and blue wavelengths are most efficient for photosynthesis.

Answer 1

The Correct Option is C

Step 1: Factors.
Photosynthesis rate depends on light intensity (amount) and quality (wavelength/colour), among other factors (CO\textsubscript{2}, temperature).
Step 2: Application.
Red and blue light are more effective; higher intensity increases rate up to a limit.
Step 3: Conclusion.
So both properties and amount of light affect the rate.