definition of terms

Question 1

parasitology

Answer 1

• study of organisms
• lives within the body of another organism for survival

Question 2

host-parasite relationships

Answer 2

• symbiosis
• mutualism
• commensalism
• parasitism

Question 3

symbiosis

Answer 3

• living together
• two living organisms
• different species

Question 4

mutualism

Answer 4

• two different species of organisms
• beneficial to both

Question 5

commensalism

Answer 5

• two organisms
• one benefits and has neutral effect on the other

Question 6

parasitism

Answer 6

• two different species
• beneficial to one at the other’ expense

Question 7

definitive host

Answer 7

• harbors the adult
• sexual stage

Question 8

intermediate host

Answer 8

harbors the larval
- asexual stage

Question 9

reservoir

Answer 9

• allows parasite cycle to continue

Question 10

paratenic

Answer 10

harbors the parasite in its arrested stage

Question 11

endoparasite

Answer 11

• lives within host

Question 12

ectoparasite

Answer 12

• lives outside host
• found in the surface

Question 13

pathogenic

Answer 13

• cause disease
• inflict injury to man

Question 14

non pathogenic / commensal

Answer 14

• does not cause disease

Question 15

facultative

Answer 15

• can live with or without host

Question 16

obligatory

Answer 16

• cannot survive without host

Question 17

zoonotic

Answer 17

• animal parasite / non-human parasite that can infect man

Question 18

erratic

Answer 18

• fixed
• unusual organ

Question 19

incidental

Answer 19

• establish itself in host where it does not usually ordinary live

Question 20

permanent

Answer 20

• found within host from early life to maturity

Question 21

transitory

Answer 21

• larval stage develops
• adult life is free living

Question 22

periodic

Answer 22

• larval stage develops in host different from adult

Question 23

intermittent

Answer 23

• simply visits host during feeding time

Question 24

infection

Answer 24

• invasion endoparasite

Question 25

infestation

Answer 25

• invasion by ectoparasite

Question 26

infective stage

Answer 26

• morphological form

Question 27

diagnostic stage

Answer 27

• detected by laboratory retrieval methods

Question 28

carrier

Answer 28

• harboring parasite without showing signs and symptoms-parasite lives in host without causing evident harm

Question 29

epidemic

Answer 29

• sudden increae

Question 30

endemic

Answer 30

• steady, moderate level

Question 31

pandemic

Answer 31

• disseminated over an extensive area of the world