Answer
Which of the following is the unit of productivity of an Ecosystem?
- gm−2
- KCal m−2
- KCal m−3
- (KCal m−2) yr−1
Correct Answer:
Option 4: (KCal m−2) yr−1
Explanation:
Productivity of an ecosystem is the rate at which energy is produced by autotrophs during photosynthesis. It is commonly expressed in terms of energy (KCal) or biomass (grams) produced per unit area per unit time.
Therefore, the correct unit of productivity is: gm−2 yr−1 or (KCal m−2) yr−1.