Ask your own question, for FREE!
Biology
kaibeth:

Jordan has an organic garden. He is designing an experiment to determine if a mineral-oil bug spray made of garlic and habanero peppers is more effective on Japanese beetles than one made with just garlic. How could Jordan improve his plan for the experiment as outlined below? (2 points) Prepare bug sprays, being sure to document ingredients in each type Determine which plants will be sprayed and section off two groups Spray every morning at 8:30 am Record number of beetles on each group at the same times every day Record significant rain or weather events that may affect application of the sprays Photograph damage on both groups of plants at the end of the trial He should include a control group which receives no spray. He should remove all living beetles after each counting. He should account for all the beneficial insects he accidentally kills. He should prepare several variations on each spray's recipe.

Vocaloid:

Old question, but I'll respond to help out anyone who also finds this question In general, for an experiment, you always want a control group that does not receive experimental treatment. In this case, the control group would have no spray. This lets us compare both treatment groups to a baseline control group. Additionally, by adding a control group, we eliminate the possibility that neither experimental treatment makes a significant difference (hypothetical: let's say we add a control group and we discover that there is no significant difference between the sprayed vs. control, regardless of ingredient) Explanation for why the other ones are wrong: He should remove all living beetles after each counting. ---> incorrect. he needs to keep the beetles in to make sure that the beetles are only dying due to the spray and not due to beetle removal He should account for all the beneficial insects he accidentally kills. ---> incorrect, as this is not relevant to his experimental goals He should prepare several variations on each spray's recipe. ---> incorrect, as he is only interested in the effect of adding habanero.

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Latest Questions
CourtneyWatson: what is 84+43-58? @thetaurus21
52 minutes ago 0 Replies 0 Medals
DontCallMemug: is this good
2 hours ago 3 Replies 0 Medals
june06: convert 0.07 to a reduced fraction?
4 hours ago 0 Replies 0 Medals
teressa024: help me
4 hours ago 2 Replies 3 Medals
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!