Question

Which of the following is not a limiting factor for photosynthesis?

• A. Carbon dioxide
• B. Oxygen
• C. Light
• D. Chlorophyll

Answer 1

The correct option is B Oxygen

Oxygen is not a limiting factor for photosynthesis. When several factors interact and simultaneously affect a process anything in lower amounts that prevents photosynthesis occurring at its maximum rate is called a limiting factor.
In the process of photosynthesis carbon dioxide and water in the presence of sunlight and chlorophyll combine together to form glucose and oxygen is released as a byproduct. Carbon dioxide is a limiting factor as it is one of the most essential elements required for photosynthesis. Similarly sunlight and chlorophyll are also essential elements required for photosynthesis.
Oxygen is not a limiting factor as it is never considered as an element required for photosynthesis. It is released as a byproduct during photosynthesis.