Natural Selection Activity Students_
Orth 1st period 2014__________________________________
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collect data
from the rest of the class, record the average yield for each prey and predator
Data Table 1b
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Beak Types
Record Data on this Handout
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Results
- Stations 1-5
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scissors
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chopsticks
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clothespins
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spoons
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tweezers
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Prey
Type |
pennies
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1
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2
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1
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6
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7
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small pebbles
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3
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5
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2
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13
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Pipette tips
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6
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7
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5
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7
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15
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paper clips
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6
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4
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5
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7
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14
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foam peanuts
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6
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12
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6
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9
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13
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Results -
Stations 1-5 |
Beak Types
Data Table 2b Record Data on this Handout
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scissors
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chopsticks
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clothespins
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spoons
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tweezers
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Prey
Type |
pennies
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1
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0
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1
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3
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7
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large pebbles
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1
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2
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6
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11
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8
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Pipette tips
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7
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6
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6
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5
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11
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paper clips
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6
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3
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7
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5
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9
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* Numbers equal or greater than 5 mean that varriety of SB was able to survive in that environment
** Numbers equalto or greater than 12 mean that varity is able to Trive! i.e. they have energy to reproduce laying5-8 eggs at a time.
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.