Week Three Lab Essay

732 Words Feb 1st, 2014 3 Pages
Lab 3 – Biodiversity
Demonstration 1: Interdependence of Species
Table 1: Interdependence of Species Results
Round Species Missing (Bead Color and Name)
1 Humans
2 Flowers
3 Lichens
4 Bees

POST LAB QUESTIONS

1. Explain how the ecosystem was affected by the missing species for each round of the demonstration. a. Round 1 = Without humans less pollution would be in the ecosystem and the natural habitat would be a lot more stable and in better condition than it currently is in.
b. Round 2 = Without flowers in the ecosystem we would have lower levels of oxygen to breathe and at the same time a lot less allergies to things such as pollen but also without pollen bees would not be able to produce honey.
c. Round 3 = Without
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Action 2 = People can drive less, walk more, use public transits, or even carpool to save usage of gas which release carbon dioxide in the atmosphere.
Action 3 = People can do a lot more of recycling materials such as plastic, glass, magazines and following this new movement of “green”.

Experiment 1: Diversity of Plants
Table 2: Number of Each Plant Species Present in Pot 1 and Pot 2
Species Observed Number in Pot 1(sunlight) Number in Pot 2(shade)
Zinnia 4 1
Marigold 6 4
Morning Glory 2 0
Cosmos 2 4
Ryegrass 1 3
Total Number of Species in Pot: 15 12

POST LAB QUESTIONS

1. Develop a hypothesis on which pot you believe will contain the highest biodiversity.

Hypothesis = Marigold being a common species in comparison to the rest would contain the highest biodiversity.

2. Based on the results of your experiment, would you reject or accept the hypothesis that you produced in question 1? Explain how you determined this.

Accept/Reject = Accept because Marigold had the highest biodiversity because as stated in the hypothesis, Marigold is a more common species that is being observed in comparison to the other species.

3. If each pot was a sample you found in a group of wildflowers, would you determine based on the diversity of flowers that the ecosystem is healthy? Why or why not.

Answer = Even though with there being an abundance of one or more flower in comparison to the rest of them,

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