UNIT 1 (part one)

Question 1

classes of parasites:

Answer 1

1. ectoparasite
2. endoparasite

Question 2

a parasitic organism that lives on the outer surface of its host.

Answer 2

ectoparasite

Question 3

parasites that live inside the body of their host.

Answer 3

endoparasites

Question 4

example of endoparasite

Answer 4

entamoeba histolytica

Question 5

example of ectoparasite

Answer 5

lice, ticks, mites

Question 6

This parasite is completely dependent on the host during a segment or all of its life cycle.

Answer 6

obligate parasite

Question 7

an organism that exhibits both parasitic and non-parasitic modes of living and hence does not absolutely depend on the parasitic way of life, but is capable of adapting to it if placed on a host.

Answer 7

facultative parasite

Question 8

in humans causing primary amoebic meningitis and Chrysomyia sp. larva in wound

Answer 8

naegleria fowleri

Question 9

naegleria fowleri is classified as?

Answer 9

facultative parasite

Question 10

when a parasite attacks an unnatural host and survives. Lava of Musca domestica in hosts

Answer 10

accidental parasite

Question 11

example of obligate parasite

Answer 11

plasmodium:trematodes

Question 12

example of accidental parasites

Answer 12

hymenolepis diminuta (rat tapeworm)

Question 13

a parasite found in a host that is not its original host

Answer 13

incidental parasite

Question 14

example of incidental parasite

Answer 14

toxocara vitulorum

Question 15

is one that wanders in to an organ in which it is not usually found.

Answer 15

erratic parasite

Question 16

example of erratic parasite

Answer 16

entamoeba histolytica in the liver or lungs in humans:liver fluke in lungs

Question 17

are those whose life cycles are not spent entirely on the host and are seen only for certain periods of time (short or long duration)

Answer 17

temporary parasite

Question 18

example of temporary parasites

Answer 18

mosquitoes and bugs

Question 19

leads a parasitic life throughout the whole period of its life.

Answer 19

permanent parasite

Question 20

happens to reach a place where it cannot live.

Answer 20

wandering or aberrant parasite

Question 21

are those that parasitize other parasites

Answer 21

hyperparasites

Question 22

example of hyperparasites

Answer 22

plasmodium on mosquitoes

Question 23

are parasites found transiently in the excretions of the host in view of the host having consumed a parasite of another host.

Answer 23

spurious parasites

Question 24

example of spurious parasites

Answer 24

eggs of moniezia in dog feces after ingesion of moniezia infected sheep: goat and cattle intestines by the dog

Question 25

are parasites that resemble a parasite and which are present in the clinical specimen

Answer 25

pseudoparasites

Question 26

example of pseudoparasites

Answer 26

plant fibers, yeast, pollen grains

Question 27

parasites that do not cause disease are called?

Answer 27

non pathogenic parasites

Question 28

is association between two different organisms living in close physical association usually to the advantage of both as opposed to free living organisms and simply, living together.

Answer 28

symbiosis

Question 29

Any organism that is intimately associated with another organism of a different species is considered to be a?

Answer 29

symbiont

Question 30

example of symbiont/symbiosis

Answer 30

house flies and pigs

Question 31

is a relationship between two symbionts which are merely traveling together and without physiclogical or biochemical dependence on each other.

Answer 31

phoresis

Question 32

example of phoresis

Answer 32

mites carried by beetles or bacteria on the legs of a fly.

Question 33

is relationship involving symbionts that are mutually dependant on each for food and shelter. This relationship is usually obligatory and one symbiont cannot survive without the other.

Answer 33

mutualism

Question 34

example of mutualism

Answer 34

intestinal protozoa in termites.

Question 35

is a type of relationship, in which one symbiont derives benefit from the other symbiont (host) but the host is neither benefited nor harmed. "eating at the same table" .

Answer 35

commensalism

Question 36

commensalism may either be?

Answer 36

facultative or obligatory

Question 37

is the relationship between predators and prey where the predators kill the prey for food.

Answer 37

predatorism

Question 38

are those, whose immature stages develop on other parasites and emerge by killing the parasite.

Answer 38

parasitoids

Question 39

example of parasitoids

Answer 39

Hymenopteran flies on dipteran flies.

Question 40

different kinds of hosts:

Answer 40

1. definitive 2. intermediate 3. paratenic 4. reservoir 5. natural 6. accidental 7. carrier 8. intercalary

Question 41

a host that harbors a parasite in the adult stage or where the parasite undergoes a sexual method of reproduction.

Answer 41

definitive host

Question 42

harbors the laval stages of the parasite or an asexual cycle of development takes place.

Answer 42

intermediate host

Question 43

a host that serves as a temporary refuge and vehicle for reaching an obligatory host, usually the definitive host.

Answer 43

paratenic host

Question 44

a host that makes the parasite available for the transmission to another host and is usually not affected by the infection.

Answer 44

reservoir host

Question 45

a host that is naturally infected with certain species of parasite. usual place.

Answer 45

natural host

Question 46

a host that is under normal circumstances not infected with the parasite. not typical or intended.

Answer 46

accidental host

Question 47

are hosts that have a residual population of the parasite and acts as a source of Intered infection for the same type of host.

Answer 47

carrier host

Question 48

is a host that liberates the infective stages of a parasite of another trapped in the body of the original host

Answer 48

intercalary host

Question 49

any agent that caries infectious organisms between animals.

Answer 49

vector

Question 50

is an arthropod that carries the parasite between two vertebrate hosts.

Answer 50

vector

Question 51

example of blood protozoas

Answer 51

ticks and mosquitoes

Question 52

different classifications of vector:

Answer 52

mechanical and cyclical

Question 53

is an arthropod that carries the infectious aganet from, one vertebrate host to another without any development in its body.

Answer 53

mechanical vector

Question 54

is a vector in which the parasite undergoes development/multiplication before being Transmitted to the next host

Answer 54

cyclical vector