The mass of living material at a tropic level at a particular time is called:

In an ecosystem, the rate of production of organic matter during photosynthesis is termed as:

1. net primary productivity

2. gross primary productivity

3. secondary productivity

4. net productivity

Secondary productivity is the rate of formation of new organic matter by:

1. Parasite

2. Consumer

3. Decomposer

4. Producer

The rate of formation of new organic matter by rabbits in grassland is called: 

1. Secondary productivity 

2. Net primary productivity 

3. Gross primary productivity 

4. Net productivity 

The biomass available for consumption by the herbivores and the decomposers is called:

1. net primary productivity

2. secondary productivity

3. standing crop

4. gross primary productivity

Which of the following ecosystem types has the highest annual net primary productivity?

1. Tropical rainforest

2. Tropical deciduous forest

3. Temperate evergreen forest

4. Temperate deciduous forest