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WorksheetsReviewing 2.3 Flows of Energy
Total questions: 15
Worksheet time: 30mins
What is food chain?
it is the process during which producers use chemical energy in matter rather than light energy and make food.
it is a model that shows how energy flows in an ecosystem through feeding relationships.
it is a model of energy transfer that shows how food chains in a community are interconnected.
it is an energy model that shows the amount of energy available in each step of a food chain.
What is food web?
it is the process during which producers use chemical energy in matter rather than light energy and make food.
it is a model that shows how energy flows in an ecosystem through feeding relationships.
it is a model of energy transfer that shows how food chains in a community are interconnected.
it is an energy model that shows the amount of energy available in each step of a food chain.
Which of the following is the correct formula for respiration?
R=NPP + GPP
R=NPP-GPP
R=GPP-NPP
R=GPP/NPP
If gross primary productivity is 5 gC/m2yr, and the producers need 1.5 gC/m2yr for their own respiration, what is the net primary productivity?
3.5 gC/m2yr
6.5 gC/m2yr
-3.5 gC/m2yr
7.5 gC/m2yr
The GPP of a certain producer is 5,000 gC/m2yr and the NPP is 4,000 gC/m2yr. What is the repsiratory energy needed by the autotrophs?
cannot be determined from the information given
1,000 gC/m2yr
9,000 gC/m2yr
-1,000 gC/m2yr
__________ primary productivity is the total amount of energy that producers convert to chemical energy in organic molecules per unit of time.
Net
Total
Gross
Secondary
__________ primary productivity = the organic materials that remain after photosynthetic organisms in the ecosystem have used some of these compounds for their cellular energy needs (cellular respiration).
Gross
Total
Net
Secondary
To calculate Gross Secondary Productivity, you must (a) food eaten and fecal loss.
NSP calculations refer to
animals
producers
Productivity is a measure of gain in energy or biomass in a unit of _____ per a unit of _______.
area, time
mass, area
time, energy
energy, area
