Unit 3 Key area 5

Question 1

Mode of transmission of parasites which occurs when an infected host physically encounters another host.

Answer 1

Direct Contact

Question 2

Symbiotic relationship where both partners benefit.

Answer 2

Mutualism

Question 3

Symbiotic relationship where one organism benefits at the expense of another organism.

Answer 3

Parasitism

Question 4

Ecological relationship between organisms of two different species that live in direct contact with one another.

Answer 4

Symbiosis

Question 5

Organism that carries a parasite from one host to another.

Answer 5

Vector

Question 6

Partner that is harmed by loss of resources to a parasite in a symbiotic relationship.

Answer 6

Host

Question 7

Partner that benefits by obtaining resources from a host in a symbiotic relationship.

Answer 7

Parasite

Question 8

Relationship that exists between two partners involved in a mutualistic relationship.

Answer 8

Interdependence

Question 9

Form of parasite which on being released is able to survive adverse conditions for a long time before meeting a new host.

Answer 9

Resistant stage

Question 10

Gradual change in parallel of two symbiotic organisms which increases their level of adaptation to suit a dependent or independent relationship.

Answer 10

Coevolution