In the equation GPP – R = NPP, R represents:
1. Environment factor
2. Respiration losses
3. Radiant energy
4. Retardation factor
Which ecosystem has the maximum biomass?
1. Grassland ecosystem
2. Pond ecosystem
3. Lake ecosystem
4. Forest ecosystem
The mass of living material at a tropic level at a particular time is called:
In an ecosystem, the rate of production of organic matter during photosynthesis is termed as:
1. net primary productivity
2. gross primary productivity
3. secondary productivity
4. net productivity
Secondary productivity is the rate of formation of new organic matter by:
1. Parasite
2. Consumer
3. Decomposer
4. Producer
The biomass available for consumption by the herbivores and the decomposers is called:
1. net primary productivity
2. secondary productivity
3. standing crop
4. gross primary productivity