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number of seeds sprouted✔ plant growthworm growth
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number of worms✔ plant growthnumber of dead plants
In this experiment, you changed the and measured the effect of this change on the in the population.
Plant Growth
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The graph to the right represents the data of this lab using a scatterplothistogrambar graphpie graph. The
In this lab, you collected data at the end of Weeks 1, 3, and 5. Suppose you had collected data every day for five weeks instead. Why would a line graph be a better format for this data than a bar graph? Check all that apply.
Check all strategies below that helped you decrease experimental error in this lab.
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: competitionpredationX mutualismcommensalismparasitism
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
Do the data shown support the hypothesis?✔ yesnoinconclusive
orangeblue bars best represent the group
How could increasing the number of plants help you decrease error in the experiment? Check all possible reasons.
are benefited by the smaller fish speciestitan triggerfishprey species.
Why is the interdependence of the worms and plants an example of commensalism?
Commensalism is a relationship where one organism benefits and the other is neither helped nor harmed. In this relationship, the plants benefit from the presence of the worms (for example, through soil aeration), while the worms are not significantly affected, neither benefiting nor being harmed by the plant's growth.
The independent variable was the , and the dependent variable was the .
Compare your response to the sample. Check all ideas that you included.
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