2nd semester exam review 2019

organisms with similar features and are in the same family taxa can be said to...

• live in the same type of ecosystem

• have slowly evolved to become herbivores

• have a common ancestor

• exchange DNA at some point in the past

which of the following ecosystems have the most species diversity according to succession?

• a newly formed volcanic island

• an agricultural field that has not been plowed for one year

• a temperate forest that has never been cleared by logging

• a field that is regularly mowed

what happens to the plants when there is an increase in soil depth and quality of soil?

• larger plants become the dominant organisms

• mosses replace flowering plants

• nitrogen-fixing bacteria kill young trees

• grasses become diseased

secondary consumers are

• plants

• the organisms that eat plants

• the organisms that eat the organisms that eat plants

• the very top of the food web

which of the following is NOT an example of Darwin's evidence for evolution

• Homologous structures

• fossil records

• use and disuse

• similarities in embryology

when reading a cladogram, the organisms that have the greatest genetic differences are ...

• connected by the fewest lines

• are right next to each other

• have the most nodes between them

why are mushrooms heterotophs?

• they absorb pre-made nutrients

• they manufacture their own food

• they undergo photosynthesis

• they have chloroplasts

relationship between a host and an organism that does the host harm is called

• commensal

• parasitic

• competitive

• mutualistic

the symbiotic relationship between two organisms that help each other

• commensalism

• mutualism

• neutralism

• parasitism

in an energy pyramid, what is lost?

• nutrients from the soil

• living space for the organisms

• food sources

• heat