GROSS PRIMARY PRODUCTION IN PLANT(GPP)

GROSS PRIMARY PRODUCTION 1.Primary production refors to all part of the energy fix by plant processing chlorophyll. Productivity refers to the rate of production on a unit area basis . 2..The total amount of solar energy converted into chemical energy by green plants is called gross primary production (Gpp) 3.A certain portion of GPP is utilised by plants ,known as respiration and the residue is known as NPP .....AND GPP=NPP+R

3.Facter affecting primary production... a..Light intensity b..The quantum efficiency of light c..Arrangement of leaves d..Leaf area index e.types of plant..C3 OR C4