A) How do you calculate the adjusted amount of energy that is available to organisms that are
one trophic level above producers? (1 point)
net primary productivity plus amount of organic material used in respiration
gross primary productivity minus amount of organic material used in respiration
gross primary productivity minus net primary productivity
net primary productivity plus gross primary productivity
B) How do you calculate the net primary productivity of an ecosystem? (1 point)
gross primary productivity minus the amount of energy lost through respiration and metabolic processes
A) Methylmercury biomagnifies in an ecosystem, meaning its concentration __________ as it
moves through each higher trophic level. (1 point)
increases
equalizes
does not change
decreases
A) increases
A) Scientists are looking to determine the primary productivity of a lake by analyzing its oxygen
net primary productivity. How are scientists able to measure how much oxygen is used during a
plant’s cellular respiration processes? (1 point)
by observing cellular respiration under the absence of light
by observing cellular respiration only when photosynthesis occurs
by observing cellular respiration under bright light conditions
by observing cellular respiration by studying biomagnification
A) by observing cellular respiration under the absence of light
A) Energy transfer is inefficient between trophic levels because (1 point)
all organisms within a trophic level die.
organisms within a trophic level are fully consumed.
molecules are fully digested from each trophic level.
dead organisms and waste are recycled throughout the trophic levels.
A) dead organisms and waste are recycled throughout the trophic levels.
A) Primary productivity is defined as (1 point)
the overall amount of energy captured by plants and other photosynthetic organisms by the
chloroplast.
the rate that plants and other photosynthetic organisms produce organic compounds.
the adjusted amount of energy in an ecosystem due to energy use by organisms for respiration.
the process where green plants and some other organisms convert light energy into chemical
energy using carbon dioxide and water.