Exam 16: Community Interactions

Many sponges and shellfish provide shelter for aquatic guests who do no harm or benefit to their host. This is an example of

In a marsh community, aquatic plankton contain 0.04 ppm of DDT, small fish contain 0.30 ppm of DDT, larger fish contain 1.5 ppm of DDT, and cormorants (fish-eating birds) contain 24 ppm of DDT. This is an example of

A correct successional sequence is represented by

Species A and species B both benefit by living together. This is an example of

An organism that carries a disease between hosts is a

Some animal populations are kept in check by

Which of the following is NOT a community?

When two species are harmed, it's called

The type of cooperation between two species of a community that is based on satisfying the needs of both species is called

Which of the following is an example of a biome?

A tropical region that has large grassy areas with scattered trees is a

When a bass feeds on a frog, the frog is the

You would find primary succession at(on)

A pelagic animal is

The usual type of symbiotic relationship between humans and the bacteria normally found in their intestinal tract is that of

The euphotic zone is that region of the ocean where

If an animal cannot digest a chemical but is able to pass out all the chemical as waste material, there is

All of the following are examples of symbiotic relationships except

This biome is located near oceans with wet, cool winters and hot, dry summers. Rainfall is 40 to 100 centimeters per year.

Some kinds of shrimp obtain food by cleaning parasites from the surface of fish. This can be termed mutualism because