Which of the following is expected to have the highest value (gm/ m2 / yr) in a grassland ecosystem
(a) Secondary Production (SP)
(b) Tertiary Production (TP)
(c) Gross Production (GP)
(d) Net Production (NP)
Correct option (c) Gross Production (GP)
The rate of total capture of energy or the rate of total production of organic material is gross primary productivity while the balance or biomass remaining after meeting the cost of respiration of producers is net primary productivity. Hence, gross productivity has highest value tn grassland ecosystem.