Question

Primary productivity of the ecosystem is most often limited by

• A. Oxygen
• B. Nitrogen
• C. Solar radiation
• D. Consumers

Answer 1

The correct option is C Solar radiation

In a food chain, energy stored at the producer level is called as primary productivity. Producer level includes plants and other photosynthetic organisms. Energy stored at the consumer level is called as secondary productivity. Consumer level includes herbivores, carnivores and decomposers. Primary productivity is the rate of conversion of light energy into chemical energy of organic molecules in an ecosystem. It is most often limited by solar radiation. Rate of conversion of solar energy into chemical energy by producers is limited by the solar radiation.

Thus, the correct answer is 'Solar radiation.'