Question
What are the primary and secondary productivities?
✓
Answer
Primary productivity:
(i) Primary productivity is the amount of energy accumulation or amount of biomass produced per uit area over a period of time.
(ii) Two types of primary productivity are; Gross Primary Productivity (GPP) and Net Primary Productivity (NPP)
GPP - R = NPP {R=respiratory losses}
Secondary productivity:
(i) Secondary productivity is the rate of formation of new organic matter by consumer.
(ii) Two types of secondary productivity are; Gross Secondary Productivity (GSP) and Net Secondary Productivity (NSP)
NSP = GSP - R {R = respiratory losses}
(i) Primary productivity is the amount of energy accumulation or amount of biomass produced per uit area over a period of time.
(ii) Two types of primary productivity are; Gross Primary Productivity (GPP) and Net Primary Productivity (NPP)
GPP - R = NPP {R=respiratory losses}
Secondary productivity:
(i) Secondary productivity is the rate of formation of new organic matter by consumer.
(ii) Two types of secondary productivity are; Gross Secondary Productivity (GSP) and Net Secondary Productivity (NSP)
NSP = GSP - R {R = respiratory losses}
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Write the name of any two copper releasing intrauterine devices. Write the reasons which make them effective contraceptives.
What is the function of the two male gametes produced by each pollen grain in angiosperms?
The phenotypic and genotypic ratios in F, generation are same in a certain kind of inheritance. Name an organism in which it occurs and mention the kind of inheritance involved.
Differentiate between Repetitive DNA and Satellite DNA.
Name the four periods in the Palaeozoic era.
Mention two strategies evolved to prevent self-pollination in flower ?
Why do bottled juices appear clearer?
Write any four properties of a good vector.
What is GEAC and what are its objectives?
Mention the technical term in following diagram:
