Data Table 1b
|
Beak Types
Record Data on this Handout
|
|||||
Results
- Stations 1-5
|
scissors
|
chopsticks
|
clothespins
|
spoons
|
tweezers
|
|
Prey
Type |
pennies
|
3
|
2
|
5
|
7
|
11
|
|
small pebbles
|
5
|
4
|
2
|
15
|
11
|
|
Pipette tips
|
6
|
8
|
5
|
8
|
19
|
|
paper clips
|
6
|
3
|
3
|
7
|
14
|
|
foam peanuts
|
11
|
11
|
7
|
12
|
10
|
|
Split peas
|
6
|
1
|
7
|
18
|
12
|
Results -
Stations 1-5 |
Beak Types
Data Table 2b Record Data on this Handout
|
|||||
|
scissors
|
chopsticks
|
clothespins
|
spoons
|
tweezers
|
|
Prey
Type |
pennies
|
3
|
1
|
3
|
7
|
6
|
|
large pebbles
|
4
|
5
|
4
|
10
|
8
|
|
Pipette tips
|
8
|
7
|
4
|
8
|
14
|
|
paper clips
|
5
|
4
|
5
|
5
|
15
|
|
Split pea
|
6
|
5
|
15
|
10
|
17
|
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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