Question

The total amount of ....., ..... per unit time produced in an ecosystem is called the gross primary productivity.

Answer 1

Productivity is of two main types: Primary and secondary.

1. Primary productivity. It further has two types:

a. Gross primary productivity: The rate at which organic compounds are formed in a green plant per unit time and area.

b. Net primary productivity: Building of biomass or storage of energy by green plants in a unit time or area.

2. Secondary productivity.

So, the correct answer is 'Organic material'.