Chapter 27.5

Question 1

Decomposers

Answer 1

Chemoheterotrophic prokaryotes function as decomposers, breaking down dead organisms and waste products

Question 2

Symbiosis

Answer 2

Symbiosis is an ecological relationship in which two species live in close contact: a larger host and smaller symbiont

Question 3

Symbiosis:

Mutualism

Answer 3

In mutualism, both symbiotic organisms benefit

Question 4

Symbiosis

Commensalism

Answer 4

In commensalism, one organism benefits while neither harming nor helping the other in any significant way

Question 5

Symbiosis

Parasitism

Answer 5

In parasitism, an organism called a parasite harms but does not kill its host

Question 6

Pathogens

Answer 6

Parasites that cause disease are called pathogens