A Student Calculates the Amount of Plant Biomass Produced by a Field

Multiple Choice

A student calculates the amount of plant biomass produced by a field during one season.He defines this as the gross primary production of the field.Is this correct, and why or why not?

A) Yes; it represents the total amount of energy received from the sun and stored by plants.
B) Yes; it represents the total amount of energy available to consumers, which is the GPP.
C) Possibly; it represents the production that could be measured, but not necessarily all production.
D) No; it represents net primary production, because it does not measure energy lost during respiration.
E) No; it represents net primary production, which includes both available production and energy lost as heat.