Species Interactions and Symbiotic Relationships

Question 1

Parasite

Answer 1

the organism in a symbiotic relationship that benefits by living on or in another organism (host) as a source of food or means of reproduction. The host is harmed in this relationship

Question 2

Host

Answer 2

the organism in a type of symbiotic relationship that provides food or a means to complete reproduction for the parasitic organism of another type of species

Question 3

Mutualism

Answer 3

a type of symbiosis involving two organisms of different species in wich both benefit or depend on the relationship to survive

Question 4

Commensalism

Answer 4

a type of symbiosis in which one species benefits and the other is not affected one way or another

Question 5

Symbiotic relationship

Answer 5

any close relationship in which individuals of different species live together in a feeding or protective relationship

Question 6

Predator-prey

Answer 6

a relationship in which one organism (predator) hunts and kills another organism (prey) for food

Question 7

Predator-prey trends

Answer 7

• humans weaken prey gene pools while predators strengthen them
• always more prey than predators
• numbers of predators follow the trend f the prey species