Ecology Test- End of Year

Which of the following descriptions about the organization of an ecosystem is correct?

• Species make up communities, which make up populations.

• Communities make up species, which make up populations.

• Populations make up species, which make up communities.

• All of the same species make up populations, different species make up communities.

The level of environmental complexity that includes living and nonliving factors is the

• atmosphere

• community

• ecosystem

• biosphere

The algae at the beginning of the food chain in Figure 3–1 are

• primary consumers

• decomposes

• primary producers

• heterotrophs

Largest number of individuals of a population that the environment can support...

• carrying capacity

• community

• organism

• ecosystem

Only 10 percent of the energy stored in an organism can be passed on to the next trophic level. Of the remaining energy, some is used for the organism’s life processes, and the rest is

• used in reproduction

• stored as body tissue

• stored as fat

• eliminated as heat

What is happening to water at A in Figure 3–3?

• Water is falling to the ground as precipitation

• Water is evaporating from the ocean

• Water is being taken up by plants through transpiration

• Water is seeping into the ground to become groundwater

Which part of Figure 3–3 shows evaporation?

• A on the left

• B on the left and right

• A on the right

• C in the middle

Carbon cycles through the biosphere in all of the following processes EXCEPT

• photosynthesis

• transpiration

• burning of fossil fuels

• decomposition of plants and animals

Animals that get energy by eating the carcasses of other animals that have been killed by predators or have died of natural causes are called

• scavengers

• omnivores

• heterotrophs

• detritivores

Each of the following is an abiotic factor in the environment EXCEPT

• plant life

• soil type

• rainfall

• temperature