3.1 Bio

Question 1

What is a niche?

Answer 1

A specific role a population has in a community or ecosystem.

Question 2

What is the difference between a fundamental and realized niche? Why are they different?

Answer 2

fundamental, is the hypothetical biggest range an animal could have. realized is the actual niche in the habitat. Competition from other populations separates the two.

Question 3

What happens if 2 animals niches overlap? What if they are the same niche?

Answer 3

The niches will be partitioned. One animal will go extinct.

Question 4

What is competition, give an example

Answer 4

-/- a deer and opossum that eat the same food.

Question 5

What is mutualism, give an example

Answer 5

+/+ fish that will eat parasites off of larger fish.

Question 6

What is commensalism, give an example

Answer 6

+/0 barnacles on a whale that filter water for food and don’t affect the whale.

Question 6

What is parasitism, give an example

Answer 6

-/+ a flea lives off of a dog, making the dog sick.

Question 7

What is herbivory, give an example

Answer 7

-/+ A beaver cuts down a tree.

Question 8

What is predation give an example.

Answer 8

+/- a lion kills a gazelle.

Question 9

What is the difference between facultative and obligatory symbiosis?

Answer 9

Facultative is beneficial but not needed to live, obligatory is needed to live.

Question 10

What is the difference between parasitism and predation?

Answer 10

Parasitism is a long term encounter, predation is short and one time only.