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Chapter 14.1 Pages 428-430
Words Worth Knowing
Ecological Niche
Habitat
Competitive Exclusion
Ecological Equivalent
Main Idea: A habitat is different from a niche
1. What is the difference between an organism’s habitat and its ecological niche?
2. Determine which factors are part of a lion’s niche and which are part of its habitat by placing these items in the correct column below
Food Trees Zebra Grass
Hunting Behavior
Savanna
Watering Hole
Wildebeest Temperature
Other Lions
Sand
Habitat Niche

Main Idea: Resource Availability gives structure to a community
3. What is competitive Exclusion?
4. What are the 3 possible outcomes from competitive exclusion?
5. What are ecological equivalents?
6. Explain why ecological equivalents cannot share the same niche.
7. The term Habitat comes from the Latin word meaning “to dwell.” Explain how this word origin relates to the definition of the word “habitat.”
8. In competitive exclusion, who is competing and who gets excluded?
9. What does equivalent mean in math? How does that meaning relate to Ecological equivalents?
Chapter 14.2 Pages 431-434
Words Worth Knowing
Competition
Symbiosis
Mutualism
Predation
Commensalism
Parasitism
Main idea: Competition and predation are 2 important ways in which organisms interact
Next to each situation, indicate whether it is
competition or
competition.
1.
____________________ Two squirrels race up a tree to get to a hidden pile of nuts.
2.
____________________ A hyena chases a vulture from a dead antelope
3.
____________________ Different species of shrubs on the
forest floor compete for sunlight
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

Tape me UP first 6.
Draw and label a sketch ON THE LEFT SIDE OF YOUR
NOTEBOOK that represents a predator-prey interaction
Main Idea: Symbiosis is a close relationship between 2 different species
7.
For each type of symbiotic relationship, complete the chart with details on how each organism is impacted using the terms “benefits,” “harmed,” or “no impact.” For each interaction, assume Organism A initiates to relationship.
Symbiotic
Relationship
Mutualism
Organism A Organism B
Commensalism
Parasitism

8.
How is parasitism similar to and different from predation?
9.
What is the main difference between an endoparasite and an ectoparasite?
10.
The term
comes from a Greek word meaning
“living together.” How does this word origin help to explain the definition of the word Symbiosis?
11.
Use your knowledge of the word “mutual” to write a definition of the word Mutualism.
12.
The word
comes from the Latin word
, meaning “table,” and
, meaning “with.” If I come to your table to eat your food, I benefit but you don’t. Draw a sketch ON THE LEFT SIDE OF THIS PAGE to show the meaning of the word commensalism.
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