Lab: Interdependence of Organisms

Question 1

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

Revolt · Accepted Answer

commensalism

Question 2

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

Revolt · Accepted Answer

In commensalism, one organism benefits, and the other neither benefits nor is harmed. In this case, plants benefited, and worms seemed neither to benefit nor be harmed.

Question 3

Compare your response to the sample. Check all ideas that you included.

Revolt · Accepted Answer

the definition of commensalism; the benefits to the plants from the worms; the lack of observed harm to the worms; the lack of observed benefit to the worms

Question 4

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

Revolt · Accepted Answer

commensalism

Question 5

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 are benefited by the . The triggerfish are .

Revolt · Accepted Answer

smaller fish species; Selection 1: smaller fish species; Selection 2: titan triggerfish; Selection 3: neither harmed nor helped

Question 6

are benefited by the .

Revolt · Accepted Answer

titan triggerfish

Question 7

The triggerfish are .

Revolt · Accepted Answer

neither harmed nor helped

Lab: Interdependence of Organisms Answers

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