AP Biology Ecosystems — practice questions
18 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice AP Biology Ecosystems in the app →In ecology, a food chain is defined as a linear sequence of organisms through which pass:The position an organism occupies in a food chain is called its:Herbivores that consume the primary producers are called:Carnivores that eat the primary consumers are called:Organisms that feed on decaying organic matter are called decomposers or:Organisms capable of synthesising their own food are grouped as:Energy is acquired by living things in how many ways?A grazing food web has which organisms at its base?A detrital food web differs from a grazing food web in that its base consists of:Autotrophs are described as capable of using which carbon source?Productivity within an ecosystem is defined as the percentage of entering energy incorporated into:The rate at which photosynthetic primary producers incorporate energy from the sun is called:Net primary productivity is used because organisms need to use some energy for their own:The recycling of inorganic matter between living organisms and their environment is called a:After a limited number of trophic energy transfers, the energy remaining may not be enough to:Gross and net primary productivity differ by the energy that producers spend on:Carbon is described as which most abundant element in living organisms?The nitrogen cycle is introduced with the observation that getting nitrogen into the living world is: