Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • School
  • Write the relationship between productivity, gross primary productivity, net primary productivity and secondary productivity.      

Write the relationship between productivity, gross primary productivity, net primary productivity and secondary productivity.

 

 

 

 
 
 
 
 

Answers (1)

PRODUCTIVITY- The rate of biomass production. It is expressed in terms of g^{-2} yr^{-2}or (kcal\; m^{-2}) yr^{-1} to compare the productivity of different ecosystems. It can be divided into gross primary productivity (GPP) and net primary productivity (NPP).

GROSS PRIMARY PRODUCTIVITY of an ecosystem is the rate of production of organic matter during photosynthesis.

NET PRIMARY PRODUCTIVITY- A considerable amount of GPP is utilised by plants in respiration. Gross primary productivity minus respiration losses (R), is the net primary productivity (NPP).

                                 GPP – R = NPP

Net primary productivity is the available biomass for the consumption to heterotrophs (herbiviores and decomposers).

SECONDARY PRODUCTIVITY is defined as the rate of formation of new organic matter by consumers.

Posted by

Priyanka Kumari

View full answer

Crack CUET with india's "Best Teachers"

  • HD Video Lectures
  • Unlimited Mock Tests
  • Faculty Support
cuet_ads

Similar Questions

Trending Articles/News

anam-khan

CBSE Class 12 board exams 2025 to have 50% competency-based questions; no change in 10th
anam-khan

CBSE Class 12 board exams 2024 over; expected result date, trends of last 10 years

Latest Question