Download File - Pedersen Science

NAMES_______________________________________________
DATE____________________
AP BIOLOGY BIG IDEA 4 and SB4 Students will assess the dependence of all organisms on one another and the flow of energy and
matter within their ecosystems. Investigate the relationships among organisms, populations, communities, ecosystems and biomes.
1.
Define the following terms: species, population, community, ecosystem, biome and biosphere.
2.
Explain the similarities and differences between a food chain and food web.
3.
Using the information on your symbiotic relationship cards complete the following (it does not matter which you choose to
be 1 or 2):
Organism 1 name:
Organism 2 name:
4.
Organism 1 (circle the one that applies): benefits
Organism 2 (circle the one that applies): benefits
harmed
harmed
unaffected
unaffected
5.
Indicate the type of symbiotic interaction described by the interaction between your two cards by circling one of the
following: competition, predation, parasitism, commensalism, or mutualism
6.
Definition of your specific symbiotic interaction:
7.
Describe the habitat and niche of your species:
8.
Draw a detailed, colorful picture of the species interaction on another sheet.
9.
Create a food chain involving species 1 and species 2. Label each trophic level in your food chain.
10. Using vocabulary previously learned in class label species 1 and 2. (hint: autotroph, producer, heterotroph, consumer 1o –
3o, herbivore, carnivore)
Answer the following questions:
1. How do the different symbiotic relationships affect a species population? In other words, do each of these relationships cause
increases or decreases to populations?
2.
A brown-headed cowbird, Molothrus ater, can take
the eggs out of other birds nests, such as song
sparrows, Melospiza melodia. The brown-headed
cowbird proceeds to lay their own egg in its place.
The cowbird is significantly bigger than their host
bird thus, the other bird raises the cowbird young and
the size difference causes the original birds to
become malnutritioned and weak. What type of
symbiotic relationship is this? Explain.
3.
Describe in your own words what is happening in the graph above about the predator-prey relationship between Moose and
Wolves. (Think about what is happening to each population over time and why that might be happening.)
4.
Other than the predator-prey relationship between the two species above, what other factors do you think might influence an
organisms population size?