Question

Which of the following describes the amount of organic material that is available for transfer to the next trophic level after subtracting material

used for respiration?
Biomass
Gross Primary productivity
Net Primary productivity
Primary productivity

Answer 1

Question: "Which of the following describes the amount of organic material that is available for transfer to the next trophic level after subtracting material?"

Answer: "Out of the options given prior to the question, Net Primary productivity is the best choice. The answer alone can be determined through the definition of the word. Net Primary productivity literally is the amount of organic material that is available for transfer to the next trophic level after subtracting material used for respiration. Hence, the correct choice is C."

Answer 2

Net Primary productivity

Step-by-step explanation:

In an ecosystem, primary productivity is a term used for autotrophic organisms. It is the process by which these organisms like plants, green algae etc. make their own food using inorganic sources. However, they do not utilize all the matter they make from this process.

The NET PRIMARY PRODUCTIVITY (NPP) is the amount of organic material that is available for transfer to the next trophic level after subtracting material used for respiration. This means that NPP is the amount available after removal of the one to be lost via respiration i.e. NPP = GPP - respiration.