Question: What is a niche?

Answer: A niche is a full range of of physical and biological conditions in which an organism lives and the way in which the organism uses those conditions.

Question: Give an example of resources a squirrel might need.

Answer: A squirrel needs food, water, and a habitat.

Question: Three different warbler species live in the same tree. One species feeds at the top of the tree, the second species feeds in the middle part of the tree, and the third species feeds at the bottom of the tree. Do all three species occupy the same niche? Explain.

Answer: No, each species has a different niche in the same tree habitat. By being in different areas of the tree, the species avoid competing directly with one another.

Question: Competition occurs when organisms attempt to use the same resources. (T/F)

Answer: True

Question: Competition between members if the same species is known as interspecific competition. (T/F)

Answer: False

Question: The complexity exclusion principle states that no two organisms can occupy exactly the same niche in exactly the same habitat at exactly the same time. (T/F)

Answer: False

Question: If two species of bacteria are grown into the same culture, one species will always outcompete the other. (T/F)

Answer: True

Question: Members of the same species tend to divide resources instead of competing over them. (T/F)

Answer: True

Question: a lion eating a zebra is an example of

Answer: predation

Question: a cow eating grass is an example of

Answer: herbivory