Question

The given diagram illustrates Blackman's law of limiting factor. Which of the factor can be considered as a limiting factor in the above diagram?

• A. Carbon dioxide
• B. Temperature
• C. Intensity of light
• D. All of the above

Answer 1

The correct option is C Intensity of light

Blackman's law is applicable to photosynthesis. It states that a process is controlled by many factors but the rate of photosynthesis will depend on the factor which is present in limited quantity.For example, photosynthesis depends upon carbon dioxide concentration, light intensity, water, presence of chlorophyll. If all factors are present but light intensity is low then light will become the limiting factor and rate of photosynthesis will depend only on light, the limiting factor.

Thus, the correct answer is option C.