Final Exam 3

Question 1

arthropod supphylum lacking antennae; two tagmata

Answer 1

Clielicerata

Question 2

extinct, arthropod subphylum whose members lack mouthparts; bodies separated in three lobes

Answer 2

Trilobita

Question 3

crustacean class lacking abdominal appendages; includes subclasses Cirrepedia and Copedoda

Answer 3

Maxillopoda

Question 4

ticks and mites; economically important, arachnid order

Answer 4

Acari

Question 5

biramous, mandibulate arthorpods; two pair of antennae; subphylum

Answer 5

Crustacea

Question 6

roly-polys (“pill bugs”); eggs develop in maternal pouch; reduced carapace

Answer 6

Isopoda

Question 7

Subphylum; centpedes and milipedes

Answer 7

Myriapoda

Question 8

lack arms; jointed mouthparts are called “Aristotle’s lantern”; pluteus larva

Answer 8

Echinoidea

Question 9

Subclass of small crustaceans; lack carapace; food for many marine fish populations

Answer 9

Copepoda

Question 10

brittle stars; tube feet lack ampullae; no pedicellariae

Answer 10

Ophiuroidea

Question 11

phylum whose members lack cilia

Answer 11

Arthropoda

Question 12

velvet worms; slime glands

Answer 12

Onycophora

Question 13

superphylum named after a feeding groove

Answer 13

Ambulacraria

Question 14

crustaceans most likely to represent ancestral condition; live in sea caves very few species

Answer 14

Remipedia

Question 15

Caenorhabditis elegans possess a fixed number of body cells in an adult (all adults of a species have the same number) is called

Answer 15

Eutely

Question 16

Thin tubes attached to the gut of many arthropods that sere as excretory organs are called

Answer 16

malpighian tubels

Question 17

insect segments are covered in a series of plates called ____; dorsal:___ ventral:____ lateral:_____

Answer 17

sclerites; tergum; sternum; pleura

Question 18

this type of metamorphosis is characterized by radically different larval and adult stages

Answer 18

Holometabolous development

Question 19

what makes the shell of a lobster so hard

Answer 19

impregnation of the cuticle with calcium salts

Question 20

which respiratory pigment(s) carry oxygen in crustacean hemolymph

Answer 20

Hemoglobin and hemocyanin

Question 21

during ecdysis, a new cuticle is partially excreted prior to molting of the previous exoskeleton. which layer of the procuticle is synthesized after molting

Answer 21

Endocuticle

Question 22

Which phylum are pseudocoelomate and triploblastic, lack circular muscles, and has a cuticle acts as an elastic spring that antagonizes muscle contraction

Answer 22

Nematoda

Question 23

Whats the most accurate explanation of nitrogenous waste and ion balance in the crustacean example (crayfish) discussed in class

Answer 23

Ammonia is excreted via the gills, but ion regulation is achieved by the antennal gland

Question 24

what types of appendages do arthropods have

Answer 24

antennae , walking legs, and mouthparts

Question 25

the common name for a chaetognath is

Answer 25

arrow worm

Question 26

name four general characteristics of Echinodermata

Answer 26

endoskeleton of ossicles, pedicellariae, dermal brachiae, and water vascular system

Question 27

sea star development from a bipinnaria larva to an adult involves all of the following

Answer 27

ropositioning the mouth and anus, loss of the anterior-posterior axis, and development of oral and aboral surfaces

Question 28

Echinoderm tube feet run along the ____ groove that extends along the oral side from mouth to the tip of the arm

Answer 28

Ambulacral

Question 29

thin extensions of hte echinoderm body wall that allow gas exchange and loss of ammonia by diffusion are called

Answer 29

dermal branchiae

Question 30

water enters the water vascular system of a sea star through a porous plate on the aboral surface called the

Answer 30

Madreporite

Question 31

which of the following parasitic nematodes only infects a single host species

Answer 31

Enterobius vermicularis

Question 32

can a substance such as uric acid contribute to osmotic pressure in its insoluble state

Answer 32

no

Question 33

if you treated insets with a compound that stimulates secretion of prothoracicotropic hormone, what effect would you expect

Answer 33

ecdysone production by the prothoracic gland would increase, and the aphids would molt

Question 34

ecdysone is secreted by the ____ and targets the _____

Answer 34

prothoracic glad ; epidermal cells

Question 35

Name four characteristics of the phylum Hemichordata

Answer 35

tripartite coelom; excretion is performed by a glomerulal structure; pharyngeal ("gill") slits; buccal diverticulum

Question 36

what's the life cycle of guinea worm (Drancunculus Mendinesis)

Answer 36

Human ingest copepode > larvae released when copepod dies > larvae travel to gut & mature > fertilized females travel to skin (legs and feet) > form a blister on leg & foot > blister burst and larvae infect copepod > goes through 2 molts > >>>>