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NEETBotanyPhotosynthesis in Higher Plants

According to Blackman's Law of Limiting Factors, what determines the rate of a chemical process affected by more than one factor?

Options

  1. AThe factor that is at its maximum value
  2. BThe factor nearest to its minimal value
  3. CThe factor that changes the most
  4. DThe factor that is most constant

Correct answer

B. The factor nearest to its minimal value

Step-by-step solution

When several factors affect any [bio] chemical process, Blackman’s (1905) Law of Limiting Factors comes into effect. This states the following: If a chemical process is affected by more than one factor, then its rate will be determined by the factor which is nearest to its minimal value: it is the factor which directly affects the process if its quantity is changed. For example, despite the presence of a green leaf and optimal light and CO2 conditions, the plant may not photosynthesise if the temperature is very lo

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