Quiz 1

Question 1

an intermediate host in which the parasite does not undergo any further development, usually remaining encysted until the definitive host eats the transport host ex. mouse infected with canine heartworm larvae Toxocara Canis

Answer 1

Transport/Paratenic Host

Question 2

two organisms of different species, one organism injures the other and produces outward signs of disease ex. emaciated cow with parasites

Answer 2

Parasitosis

Question 3

object that is mistaken for a parasite ex. pollen grain in fecal

Answer 3

Pseudoparasite

Question 4

Requires more than 1 host in its life cycle

Answer 4

Heteroxenous parasite

Question 5

a vertebrate host in which a parasite (or disease) occurs naturally and which is a source of infection for human beings and their domestic animals ex. birds and Eastern Equine Encephalomyelitis

Answer 5

Reservoir Host

Question 6

a parasite that makes short visits to its host to obtain nourishment or some other benefit ex. mosquitos

Answer 6

Periodic Parasite

Question 7

Symbiosis smaller member of the relationship is mechanically carried about by a larger member ex. bacteria Moraxella Bovis carried on legs of facefly Musca autumnalis

Answer 7

Phoresis

Question 8

Symbiosis two organisms of different species, one benefited, one neither benefited or harmed ex. sharks and remoras

Answer 8

Commensalism

Question 9

Domain–> Kingdom –> Phylum –> Class –> Order –> Family –> Genus/Species Each scientific name has two Latin words, first is capitalized and the Genus, second is lowercase and the specific epithet which indicates the particular type of animal

Answer 9

Scientific Name

Question 10

the host that harbors the larval, asexual, or immature stages of the parasite ex. mosquito in canine heartworm

Answer 10

Intermediate Host

Question 11

Symbiosis two organisms of different species, one member (parasite) lives on or in the other member (host), metabolic dependency

Answer 11

Parasitism

Question 12

1. May feed on blood, lymph, or exudates 2. May feed on solid tissues, either directly or after liquefying them 3. May compete with host for the food it has ingested either by ingesting the intestinal contents or by absorbing them through the body wall 4. May cause mechanical obstruction of the intestine, bile ducts, blood vessels, lymph channels, bronchi or other body channels 5. May produce pressure atrophy 6. May destroy host cells by growing inside them 7. May produce various toxic substances, such as hemoslysins, histolysins and anticoagulants 8. May produce allergic reactions 9. May produce various host reactions such as: inflammation, hypertrophy, hyperplasia, and nodule formation 10. May (directly or indirectly) promote neoplastic transformation of cells. 11. May carry diseases and other parasites including: malaria, swine flu, salmon poisoning and heartworm. 12. Reducing host resistance to other diseases and parasites

Answer 12

12 ways in which parasites can harm/injure their host

Question 13

Symbiosis short-term relationship in which one symbiont benefits at the expense of the other ex. tiger and water buffalo

Answer 13

Predator-Prey

Question 14

a parasite that lives within the body of the host ex. heartworm

Answer 14

Endoparasite

Question 15

an organism that must live in a parasitic existence ex. canine heartworms

Answer 15

Obligatory Parasite

Question 16

has only 1 host throughout its life cycle

Answer 16

Homoxenous (monoxenous) parasite

Question 17

the study of parasitic relationships

Answer 17

Parasitology

Question 18

the development of a parasite through its various life stages

Answer 18

Life Cycle

Question 19

narrow host range

Answer 19

Stenoxenous parasite

Question 20

the first host parasitized by the larval stages of the parasite ex. snail for “lizard poisoning fluke” Platynosomum fastosum

Answer 20

First Intermediate Host

Question 21

a parasite that lives on the outside of the body of the host ex. fleas

Answer 21

Ectoparasite

Question 22

two organisms of different species, one organism is potentially pathogenic but does not cause outward signs of disease ex. healthy cattle on pasture harbor parasites in GI tracts

Answer 22

Parasitiasis

Question 23

parasitism by an internal parasite ex. canine roundworms infect dogs

Answer 23

Infection

Question 24

affects a wide variety of hosts

Answer 24

Euryxenous parasite

Question 25

any disease that is transmissible from lower animals to humans ex. rabies

Answer 25

Zoonosis

Question 26

parasitism by an external parasite ex. fleas infest dogs

Answer 26

Infestation

Question 27

the host that harbors the adult, mature, or sexual stages of a parasite ex. dog in canine heartworm

Answer 27

Definitive Host

Question 28

Symbiosis two organisms of different species, both are benefited ex. ciliates in the rumen of the cow

Answer 28

Mutualism

Question 29

a parasite in a host in which it does not usually live ex. heartworm in humans

Answer 29

Incidental Parasite

Question 30

an organism that is capable of living free or as a parasite ex. Naegleria species can live in soil, causes primary amoebic meningoencephalitis in humans

Answer 30

Facultative Parasite

Question 31

the second host parasitized by the larval stages of the parasite ex. lizard for “lizard poisoning fluke” Platynosomum fastosum

Answer 31

Second Intermediate Host

Question 32

a parasite that has wandered into an organ or tissue in which it does not ordinarily live ex. Cuterebra species in the brain of a dog

Answer 32

Erratic/Aberrant Parasite

Question 33

the association (temporary or permanent) between two organisms of different species ex. lichen

Answer 33

Symbiosis