Lab: Interdependence of Organisms Answers

The results of this experiment show that plants grow more in soil containing worms than in soil without worms. Which factors below helped the plants grow taller? Check all that apply.

Classify the interaction between worms and lima bean plants: competitionpredationmutualism✔ commensalismparasitism

Titan triggerfish feed on coral, which is often buried under rocks on the sea floor. To access the coral, these fish turn over rocks. It has been shown that the absence of the titan triggerfish changes the population levels of other species of fish that live in the same coral-reef environment.One can conclude that the ✔ smaller fish speciestitan triggerfish prey species

orangeblue bars best represent the group

are benefited by the smaller fish speciestitan triggerfishprey species.

number of seeds sprouted✔ plant growthworm growth

Do the data shown support the hypothesis?✔ yesnoinconclusive

orange✔ blue bars best represent the group

How could increasing the number of plants help you decrease error in the experiment? Check all possible reasons.

Why is the interdependence of the worms and plants an example of commensalism?

are benefited by the smaller fish species✔ titan triggerfishprey species.

The independent variable was the , and the dependent variable was the .

without worms, and the orangeblue bars represent the growth of plants with worms.

The triggerfish are helpedharmedneither harmed nor helpedboth harmed and helped.

✔ number of wormsworm sizeplant growth

without worms, and the ✔ orangeblue bars represent the growth of plants with worms.

The triggerfish are helpedharmed✔ neither harmed nor helpedboth harmed and helped.

The relationship of the triggerfish and other fish is an example of competitionpredationmutualismcommensalismparasitism.