Chapter 13.3

Question 1

What relationship involves organisms who only share indirect contact?

Answer 1

Neutralism

Question 2

What is a model that shows all feeding relationships within an ecosystem?

Answer 2

Food web

Question 3

What is an organism that cannot produce its own food?

Answer 3

Heterotroph

Question 4

What feeding relationship involves one animal hunting another for food?

Answer 4

Predation

Question 5

What are carnivores that feed on dead animals instead of hunting live animals?

Answer 5

Scavengers

Question 6

What is a close relationship between organisms?

Answer 6

Symbiosis

Question 7

What nutritional relationship involves organisms struggling against each other for limited resources?

Answer 7

Competition

Question 8

What is an organism that feeds on dead and decaying organic matter?

Answer 8

Saprophyte

Question 9

What is an organism that can make its own food?

Answer 9

Autotroph

Question 10

What is a classification that shows an organism’s feeding relationships with other organisms?

Answer 10

Trophic level

Question 11

What diagram shows how energy is passed from one trophic level to the next?

Answer 11

Energy pyramid

Question 12

What are organisms that encourage decay by breaking down detritus into smaller parts for decomposers to eat?

Answer 12

Detritivores

Question 13

What type of organisms feed on detritus and break it into nutrients returned to the soil?

Answer 13

Decomposers

Question 14

What positive symbiosis involves both organisms benefiting?

Answer 14

Mutualism

Question 15

What negative symbiosis involves one organism stealing nutrients from the host?

Answer 15

Parasitism

Question 16

What neutral symbiosis involves one organism being helped and the other neither helped nor harmed?

Answer 16

Commensalism

Question 17

What is a list starting with producers that shows what eats what?

Answer 17

Food chain