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
- AThe factor that is at its maximum value
- BThe factor nearest to its minimal value
- CThe factor that changes the most
- 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