Question 1

All the following developmental stages are found in the incomplete metamorphosis life cycle of insects EXCEPT:&#10;A) Egg&#10;B) Imago&#10;C) Pupa&#10;D) Nymph

Accepted Answer

The pupa stage is found in the complete metamorphosis insect life cycle.

Question 2

All the following insects develop through complete metamorphosis EXCEPT:&#10;A) Arachnids&#10;B) Fleas&#10;C) Flies&#10;D) Mosquitoes

Accepted Answer

Arachnids, lice, true bugs, and crustaceans all develop through incomplete metamorphosis.

Question 3

The Ixodes spp. tick serves as a vector for all the following diseases EXCEPT:&#10;A) Babesia spp.&#10;B) Borrelia burgdorferi&#10;C) Franciella tularensis&#10;D) Rickettsia rickettsii

Accepted Answer

F. tularensis, the causative agent of tularemia, is transferred to humans via Dermacentor spp. ticks.

Question 4

Evidence of pediculosis infestation includes the finding of:&#10;A) Louse antibodies in patient serum&#10;B) Eggs attached to hair shafts&#10;C) Larvae recovered from patient clothing&#10;D) A tunnel of insects in the skin

Accepted Answer

Louse eggs (nits) are found attached to any body hair (location depends on species). Adult lice may also be recovered at the same time. Tunneling insects include mites such as Sarcoptes scabiei, which burrow into outer skin layers.

Question 5

Which of the following Arthropoda is involved in the transmission of African sleeping sickness?&#10;A) Bug&#10;B) Flea&#10;C) Fly&#10;D) Mosquito

Accepted Answer

The Glossina spp. (tsetse) fly is the vector for African trypanosomiasis. All flies can act as mechanical transfer vectors for many protozoan species.

Question 6

Which of the following Arthropoda is involved in the transmission of the Black plague?&#10;A) Flea&#10;B) Fly&#10;C) Mosquito&#10;D) Tick

Accepted Answer

The rat flea, Xenopsylla spp., is known to carry and transmit Yersinia pestis, the causative agent of bubonic plague, as well as Rickettsia mooseri and tapeworm eggs (H. nana and H. diminuta).

Question 7

Which of the following Arthropoda is involved in the transmission of Rocky Mountain spotted fever?&#10;A) Bug&#10;B) Fly&#10;C) Mosquito&#10;D) Tick

Accepted Answer

Dermacentor spp. hard ticks are known to carry and transmit Rickettsia rickettsii, the causative agent of Rocky Mountain spotted fever.

Question 8

If a parasite can be transferred from an adult insect to its offspring, it is said to be transferred:&#10;A) Incidentally&#10;B) Mechanically&#10;C) Sexually&#10;D) Vertically

Accepted Answer

When pathogens are passed from adult to egg (transovarial transmission), and then survive in the next insect lifecycle forms (egg, nymph, adult), it has been transmitted transstadially. This pathogen is said to be transmitted vertically from generation to generation. Babesia microti can pass vertically in the Ixodes spp. tick.

Question 9

The life cycle of Sarcoptes scabiei differs from other Arthropoda because it:&#10;A) Feeds only on blood&#10;B) Has only four legs&#10;C) Is a permanent ectoparasite&#10;D) Can transfer viral particles to the host

Accepted Answer

Sarcoptes scabiei, the mange mite, is a permanent ectoparasite that burrows into the skin, where it lives and reproduces.

Question 10

Transmission of Leishmania spp. to humans is associated with:&#10;A) Culex spp.&#10;B) Phlebotomus spp.&#10;C) Simulium spp.&#10;D) Tabanus spp.

Accepted Answer

The sandfly, Phlebotomus spp., is the vector for Leishmania spp. Humans become infected when an infected fly bites the host, transferring the parasite to the subcutaneous layers of the skin. Culex spp. is the vector for W. bancrofti, and Simulium spp. is the vector for O. volvulus and M. ozzardi. Tabanus spp. is a vector for bacterial diseases-for example, anthrax and HYPERLINK "https://en.wikipedia.org/wiki/Francisella_tularensis" Francisella tularensis as well as animal trypanosomes. This fly can mechanically transfer some protozoan parasite cysts.

Question 11

Rickettsia typhi is transmitted by:&#10;A) Dermacentor spp.&#10;B) Pediculus spp.&#10;C) Sarcoptes scabiei&#10;D) Xenopsylla cheopis

Accepted Answer

The answer of Rickettsia typhi is transmitted by:&#10;A) Dermacentor spp.&#10;B)...

Question 12

Francisella tularensis (tularemia) is transmitted by:&#10;A) Amblyomma americanum&#10;B) Dermacentor spp.&#10;C) Ixodes spp.&#10;D) Ornithodoros spp.

Accepted Answer

The answer of Francisella tularensis (tularemia) is transmitted by:&#10;A) Amblyomma...

Question 13

Name the arthropod shown in the following image:  &#10;A) Amblyomma americanum&#10;B) Dermacentor andersoni&#10;C) Ixodes spp.&#10;D) Ornithodoros spp.

Accepted Answer

The answer of Name the arthropod shown in the following...

Question 14

Name the arthropod shown in the following image:  &#10;A) Cimex lectularius&#10;B) Pediculus humanus capitis&#10;C) Pediculus humanus humanus&#10;D) Phthirus pubis

Accepted Answer

The answer of Name the arthropod shown in the following...

Deck 7: Arthropoda