After accounting for losses due to respiration from the biomass produced by photosynthesis, the remainder is known as:

Correct option is B

Net primary productivity (NPP) is the biomass produced by photosynthesis after accounting for losses due to respiration by the plants. NPP represents the energy available for growth, reproduction, and consumption by herbivores and decomposers.
· Gross primary productivity (GPP) (option a) refers to the total amount of biomass or energy produced by photosynthesis, without accounting for the energy lost through respiration.
· Net primary productivity (NPP) (option b) is the remaining energy after plants use some for respiration, and it represents the actual biomass available for consumption in an ecosystem.
· Gross ecological productivity (option c) is not a commonly used term.
· Net secondary productivity (option d) refers to the biomass produced by consumers (like herbivores) after accounting for their respiration and is not related to primary production.
Information booster:
1. NPP is a key measure in ecosystem studies as it indicates the amount of energy available to sustain an ecosystem’s food web.
2. The formula is: NPP = GPP - Respiration (R).