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Transcript
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SECTION
14.2
Date
COMM UNITY I NTERACTIONS
Study Guide
KEY CONCEPT
Organisms interact as individuals and
in populations.
VOCABULARY
competition
symbiosis
commensalism
predation
mutualism
parasitism
MAIN IDEA: Competition
and predation are two important ways in which organisms
interact.
Next to each situation described below, write whether it is an example of interspecific
competition or intraspecific competition,
1. Two squirrels
race up a tree to reach a hidden pile of nuts.
2. A hyena chases offa
3.
vulture to feast on an antelope carcass.
Different species of shrubs and grasses on the forest floor
compete for sunlight.
6.
4.
Brown bears hunting for fish on a river's edge fight over space.
5.
Male big horn sheep butt heads violently in competition for mates,
Draw and label a sketch that represents an example of a predator-prey interaction
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Unit 5 Besource Book
McDougal Littell Biology
Study Guide 39
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STUDY GUIDE, CONTINUED
MAIN IDEA: Symbiosis is a close relationship between species.
7. For each type of symbiotic relationship, complete the chart with details about
how each
organism is impacted using the terms "Benefits," "Harmed," or "No impact," For each
situation, assume that Organism A initiates the relationship,
Symbiotic Relationship
0rganism A
Organism B
mutualism
commensalism
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8.
How is parasitism similar to and different from predation?
9.
What is the difference between endoparasites and ectoparasites?
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Vocabulary Gheck
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The term symbiosis comes from a Greek term which means "living together." How does
this word origin help to explain the definition of symbiosis?
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11. Use your knowledge of the word "mutual" to write a definition for mutualism,
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word commensalism comes from the La|in mensa, meaning "table," and com-,
meaning "with." If I come to your table to eat your food I benefit but you don't. Draw
a sketch to show this meaning to help you remember it.
12. The
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40 Study Guide
Unit 5 Resource Book
McDougal Littell Biology