The productivity of the ecosystem can be measured in two ways: ​ (a)   and ​ (b)   .

• Gross Primary Productivity
• Net Primary Productivity
• Logistic Growth
• Exponential Growth

Organize these options into the right categories

Groups:

(a) Gross Primary Productivity

,

(b) Net Primary Productivity

• The energy stored as biomass is available to other organisms in the ecosystem.

• The amount of light energy that is converted to chemical energy by photosynthesis.

• The rate at which the producers in an ecosystem capture energy.

• Equal to Gross Primary Productivity minus the amount of energy used by producers for respiration

What does the plant do with the glucose (sugar) it produces?

• Half of it is used in cellular respiration

• Nothing

• Saves it.

• None of these

_______ is a term that is used to describe the amount of organic (carbon) material in an ecosystem.

Net primary productivity is the most important measurement because it represents the amount of chemical energy (glucose) that will be available to consumers in the ecosystem.

• True

• False

Rain forests account for ​ (a)   of the Earth's surface, but account for ​ (b)   of the world's primary productivity.

• 5%
• 30%
• 100%
• 50%

In terrestrial ecosystems, what factor or factors determine the net primary productivity?

• Light

• Temperature

• Amount of Rainfall

• All of These

In aquatic ecosystems, productivity is limited by two factors: ​ (a)   and ​ (b)   .

• Light
• the availability of nutrients
• Darkness
• WInter
• Summer

Any energy consumed from cellular respiration ​ (a)   be passed up to the next trophic level.

• cannot
• Can