Correct Answer
verified
Multiple Choice
A) having longitudinal muscles but no circular muscles
B) having separate male and female individuals
C) by shedding their integument
D) by having a tough cuticle made largely of collagen
E) All of the choices provided are correct
Correct Answer
verified
Multiple Choice
A) larval tunicates that developed the ability to reproduce sexually while retaining the larval body form
B) a gradual modification of the adult body form of Urochordates
C) larval Cephalochordates that developed the ability to reproduce sexually while retaining the larval body form
D) echinoderms with a post anal tail and notochord
E) segmented echinoderms
Correct Answer
verified
Multiple Choice
A) crop
B) nerve cord
C) setae
D) circular muscles
E) metanephridia
Correct Answer
verified
Multiple Choice
A) notochord
B) dorsal hollow nerve cord
C) pharyngeal slits
D) post anal tail
E) protostome development
Correct Answer
verified
True/False
Correct Answer
verified
True/False
Correct Answer
verified
Multiple Choice
A) They are acoelomate.
B) They are triploblastic.
C) They have an incomplete digestive system.
D) They respire by diffusion of gases through the body wall.
E) All the choices provided are true.
Correct Answer
verified
True/False
Correct Answer
verified
Multiple Choice
A) spongocoel and gastrovascular cavity
B) mesohyl and mesoglea
C) osculum and mouth/anus
D) epithelial cells and epidermis
E) spongin and polyp
Correct Answer
verified
Multiple Choice
A) planarian
B) monogenean
C) tapeworm
D) trematode
E) ctenophore
Correct Answer
verified
Multiple Choice
A) crabs
B) trilobites
C) centipedes
D) mites
E) nautilus
Correct Answer
verified
Multiple Choice
A) krill
B) barnacles
C) ostracods
D) pill bugs
E) scorpions
Correct Answer
verified
Multiple Choice
A) Coleoptera: beetles
B) Lepidoptera: grasshoppers
C) Diptera: flies
D) Hemiptera: bugs
E) Hymenoptera: ants, bees, and wasps
Correct Answer
verified
Multiple Choice
A) scolex
B) flame cell
C) cnidocil
D) ganglion
E) cercaria
Correct Answer
verified
Multiple Choice
A) a gametophyte
B) an hermaphrodite
C) a morphodyte
D) a bisexual
E) a transexual
Correct Answer
verified
Multiple Choice
A) Their tentacles serve both in respiration and in feeding.
B) They have a U-shaped digestive tract.
C) They have a true coelom.
D) There are three phyla of them: Phoronida, Bryozoa, Brachiopoda.
E) They are parthenogenetic.
Correct Answer
verified
Multiple Choice
A) inarticulates
B) invertebrates
C) supinates
D) retrogrades
E) aspinates
Correct Answer
verified
Multiple Choice
A) enters through the osculum into the spongocoel and exits via the ostia
B) enters through the spongocoel into the osculum and exits via the ostia
C) enters through the ostia into the osculum and exits via the spongocoel
D) enters through the ostia into the spongocoel and exits via the osculum
E) enters through the osculum into the ostia and exits via the spongocoel
Correct Answer
verified
Multiple Choice
A) jointed legs, ecdysis, and an exoskeleton
B) antennae, six legs, and mandibles
C) compound eyes, book lungs, and the hemocoel
D) Malphigian tubules, ommatidia, and tagmata
E) spiracles, cephalothorax, and proboscis
Correct Answer
verified
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