Host-Parasitic Relationship

Question 1

Types of Symbiosis

Answer 1

mutualism
commensalism
parasitism
competition
predation and herbivory

Question 2

• a mutually beneficial symbiotic relationship

Answer 2

mutualism

Question 3

• a one-sided symbiotic relationship

Answer 3

commensalism

Question 4

• one species lives on, in or with a host species

Answer 4

parasitism

Question 5

• relationship in which organisms compete for resources

Answer 5

competition

Question 6

• symbiosis where one organism feeds on another

Answer 6

predation and herbivory

Question 7

is a close, long-lasting relationship where both parties benefit. Organisms can use other organisms for cleaning, protection or
gathering food. In some relationships, the organisms can’t survive without each other.

Answer 7

Mutualism

Question 8

is a one-sided relationship where one of the organisms benefits greatly
from the symbiosis. The other is not helped, but it is not harmed or damaged from the
relationship either. In some of these relationships, the organism that is
reaping the benefit will use the other for protection or transportation.

Answer 8

Commensalism

Question 9

, one organism benefits from the relationship at the expense of the other. The organism may live inside another organism’s body (endoparasitism) or on its
surface (ectoparasitism). The host species often weakens and sometimes dies, but in
most cases, the parasite needs it to stay alive so it can keep feeding on it.

Answer 9

parasitism

Question 10

Many species compete for the same resources in an ecosystem, like this type of relationship is the opposite of
symbiosis, but ecosystems depend on a balance of different species being present. If one species has an abundance of resources and another doesn’t, both species could suffer and possibly die out.

Answer 10

Competition

Question 11

is the process by which one organism feeds on another, typically one animal eating another animal.

Answer 11

Predation

Question 12

relationships involve an animal eating part or all of a plant.

Answer 12

Herbivory

Question 13

Host – Parasitic Relationship

Answer 13

Environment
Humidity
Ambient temp.
Spacing
Housing
Moisture
Ventilation
Lighting
Feeds
Pollutants

Question 14

Host

Answer 14

Age
Sex
Immune resistance
Genetic

Question 15

Agent

Answer 15

Virulence
Tropism (ability to resist)

Question 16

Ways bacteria cause disease:

Answer 16

Invasion
Produce toxin
Attach and colonize particular cell/organ
Evade host defenses

Question 17

Ways virus cause disease:

Answer 17

Cytolysis
Maintain state of the host
Integrates into the genome of the host

Question 18

Ways parasite cause disease:

Answer 18

Local destruction of cells/tissue
Affect blood circulation
Cause space occupying lesion
Nutritive competition

Question 19

Ways fungi cause disease:

Answer 19

Invasion of living tissue
Induce allergies and hypersensitivity
Produce toxins (toxicosis)

Question 20

– advantage to one partner but no disadvantage to the other

Answer 20

Commensalism

Question 21

– 2 organisms live together without disadvantage and harming each other

Answer 21

Mutualism