Chapter 4

Question 1

Density independent factors

Answer 1

Natural disasters

Question 2

Density independent favor limiting population

Answer 2

Fire

Question 3

Food webs

Answer 3

How energy is lost
Grass to herbivores
To predatorS

Question 4

How much energy is released as heat between trophic levels

Answer 4

90%

Question 5

Symbiosis

Answer 5

One depends on the other to exist

Ex. Bed bugs and humans

Question 6

Competition (-,-)

Answer 6

Negative negative

Question 7

Direct competition

Answer 7

Aggressive interaction between individuals

Question 8

Indirect competition

Answer 8

Competition for limited resources

Ex. Early bird gets the worm

Question 9

Intraspecific competition

Answer 9

Within own species

Question 10

Interspecific competition

Answer 10

Between two different populations

Question 11

How to handle competition

Answer 11

Evolution-natural section
Resource partitioning=indirect competition
Ex. One hunts in morning one hunts at night

Question 12

Ecological niche

Answer 12

Roles in ecosystem

Symbiosis

Question 13

Exploration (+,-)

Answer 13

Killing

Resource partitioning

Question 14

Commensalism (+,)

Answer 14

Ex. Burs attaching

Does it exist?

Question 15

Mutualism (+,+)

Answer 15

Both benefit

Symbiotic relation

Question 16

Speacialist

Answer 16

Specific diet
B: good at it
D: limited

Question 17

Generalist

Answer 17

General diet

Question 18

Keystone species

Answer 18

Removal of one species can break down ecosystem

-holds ecosystem together