Ecology Quiz

How much energy is transferred to the next trophic level in energy pyramids?

• 5%

• 10%

• 25%

• 50%

Producers must outnumber consumers, otherwise the food chain will collapse. Is this statement true or false?

• True

• False

A factor, such as food, water, and shelter, that limit the size of population that can supported in an environment.

• unlimited factor

• free factor

• limited factor

• lifetime factor

Resources like food, water, shelter, and mates are limited in the environment. This can cause a limit in the population number of each organism, and the number of populations that can live in the area.

This happens when _________ are limited and can limit a _____________.

• producers, population

• resources, population

• resources, protein

• researchers, prescription

A __________ is an organism that produces its own food using energy from the sun.

• producer

• consumer

• investigator

Which trophic level, with producers, contain the most energy?

• The first trophic level

• The second trophic level

• The third trophic level

• The fourth trophic level

A remora collects food scraps from a shark. The shark is neither helped nor harmed. What type of relationship is this?

• Mutualism

• Commensalism

• Parasitism

According to the food web at the right, how would the mice population be affected in the snakes were no longer part of the food web?

• the mice population would increase

• the mice population would decrease

• the mice population would stay the same

• all of the mice would die

In the food web to the left, find one example of a primary consumer.

• foxes

• seed eating birds

• hawks and owls

A tsunami (giant wave) destroyed many of the marine organisms along the coast of an ocean. What can be expected to happen to the ecosystem that was most severely hit by the tsunami? (Think about succession)

• The ecosystem will stay the same

• The ecosystem will change until a new community is established

• The ecosystem will improve because of the additional water