Question

The rate of formation of organic matter by deer in the forest ecosystem is called

• A. Primary productivity
• B. Secondary productivity
• C. Standing crop
• D. Net primary productivity

Answer 1

Answer: (B)

Secondary productivity

In a food chain, energy stored at the producer level is called as primary productivity. Producer level includes photosynthetic organisms like plants and algae. Gross primary productivity is the rate of conversion of light energy into chemical energy of organic molecules in an ecosystem. Net primary productivity is the rate of storage of organic matter except which is utilized for the respiration by plants. Energy stored at the consumer level is called as secondary productivity. Consumer level includes herbivores such as deer, carnivores and decomposers.

Thus, the correct answer is 'Secondary productivity.'