Bees
Study the observaon and hypothesis in the diagram immediately below about what aracts bees to flowers.
1. Examine experiment 1 immediately below. Here the scent of a flower that aracts bees is added to a flower that does not aract bees.
2. (a) What does experiment 1 lack?
(b) Is the scent the only variable?
(c) Idenfy as many variables as you can think of between these two types of flowers.
3. Study carefully experiment 2 immediately below. A, B and C show different outcomes.
Experiment 2:
This is a redesign on experiment 1 to consider other variables that might be responsible for the original observaon. Flower 2 in this case is a different type from flower 1, although both appear similar.
Discussion
Compare the results of flower 2 in experiment 1 with flower 2 in experiment 2. What varibales are being controlled in the design of experiment 2?
1. In experiment 2, the scent-producing substance from flower 1 is dissolved in a liquid (water or another solvent harmless to flowers) to produce a spray.
2 What is the purpose of the control flowers with nothing sprayed on them?
3. What is the purpose of the control flowers sprayed with unscented spray?
4. What hypothesis would account for outcome A in experiment 2?
5. What hypothesis would account for outcome B in experiment 2?
6. What hypothesis would account for outcome C in experiment 2?
7. How does outcome B illustrate the difference between the two sets of control plants?
8. What other variables can you think of that might be helpful to control? Why would it be useful to try a similar experiment with more than one group of the same kind of bees?
9. How would you interpret the results if the numbers of bees vising each kind of flower differed noceably?
10. How would results similar to outcome A with different kinds of flowers strengthen your conclusions?
The post What does experiment 1 lack?What does experiment 1 lack? appeared first on Homework Aider.
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