Natural Selection Activity Students_
collect data from the rest of the class, record the average yield for each prey and predator
Data Table 1b
|
Beak Types
Record Data on this Handout
|
|||||
Results -
Stations 1-5
|
scissors
|
chopsticks
|
clothespins
|
spoons
|
tweezers
|
|
Prey
Type |
pennies
|
2
|
2
|
1
|
9
|
6
|
|
small pebbles
|
2
|
3
|
2
|
8
|
12
|
|
Pipette tips
|
5
|
12
|
7
|
5
|
16
|
|
paper clips
|
9
|
13
|
6
|
8
|
17
|
|
Q Tips
|
16
|
14
|
11
|
11
|
20
|
Results -
Stations 1-5 |
Beak Types
Data Table 2b Record Data on this Handout
|
|||||
|
scissors
|
chopsticks
|
clothespins
|
spoons
|
tweezers
|
|
Prey
Type |
Q T
ips
|
20
|
20
|
15
|
4
|
25
|
|
large pebbles
|
2
|
8
|
4
|
14
|
19
|
|
Pipette tips
|
7
|
15
|
7
|
6
|
20
|
|
paper clips
|
15
|
10
|
8
|
6
|
25
|
Answer the
following questions. Use a separate sheet of paper that you will attach to the
group data tables
Part 1
- Which prey items were preferred (highest yield) by more than one predator?
- Could all of these predators coexist in a single habitat? Why or why not?
- What happened when resources became limited?
- Which predators (beak types) would have survived and likely reproduced more?
- Is there a predator in this environment that would have been selected against?
Part 2
- How did the change in environment affect the birds?
- What types of resources can be limited in an environment? List five examples.
- Were particular birds adversely affected?
- Did any group of birds do better in this new wet environment? If so, which ones?
- Which birds would likely have more offspring?
- Is the effect on the survival and reproduction of these birds an example of natural selection or artificial selection? How are they different?
- Does natural selection operate on individuals or populations? Explain.
- Can an individual member of a species evolve? Explain.
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