Ch. 14-15 Quiz Flashcards
The large posterior attachment organ of the adult monogenean is a/an
Rhabdite
Pilidium
Cirrus
Hydatid
Opisthaptor
Opisthaptor
The name of the free-swimming, ciliated stage that hatches from a trematode egg is the
Miracidium
Sporocyst
Cercaria
Scolex
Proglottid
Miracidium
Animals with three well-defined germ layers and that have one solid mass of tissue rather than tissues and organs nestled inside a body cavity are
Acoelomate and triploblastic
Eucoelomate and diploblastic
Pseudocoelomate and triploblastic
Quasicoelomate and diploblastic
Coelomate and triploblastic
Acoelomate and triploblastic
“Amictic” eggs would
Be infertile and not develop
Be diploid and develop without fertilization
Be haploid and only develop if fertilized
Lack yolk
Have a thick resistant shell and overwinter
Be diploid and develop without fertilization
The long chains of bags of eggs, which hang behind the head of a tapeworm, is called a
Strobila
Cercariae
Sporocysts
Scolex
Hydatid
Strobila
Humans become infected with lung flukes by
Eating infected fish
Eating infected crabs or crayfish
Drinking water contaminated with eggs
Wading in infected waters
Eating undercooked pork
Eating infected crabs or crayfish
How are schistosomes unique, compared to other trematodes?
They have separate male and female individuals, and the male is larger
At no stage in their life cycle do they leave the body of the host
Infections are easy to cure by drugs and surgery
They strike the rich and the poor, educated and ignorant, alike
All species must cycle through humans to survive
They have separate male and female individuals, and the male is larger
A special cysticercus called a _______ grows slowly but can proliferate thousands of scolices to infect a carnivore.
Hydatid cyst
Pilidium larvae
Cysticercosis
Vitellaria
Rhynchocoel
Hydatid cyst
Ribbon worms are
Carnivores in most cases
Nearly all marine dwellers
Nonparasitic
Mostly dioecious
All of the choices are correct
All of the choices are correct
The lophophorate phyla are grouped together because
They all belong to the deuterostome branch of the bilateral animals
They all possess a specialized crown of tentacles specialized for sedentary filter feeding
They all lack a true coelom
All appear to be derived from the Entoprocta ancestors
They simply do not fit anywhere else
They all possess a specialized crown of tentacles specialized for sedentary filter feeding
The larval stages of all three lophophorate phyla are
Also sessile, having budded off from the parent
Parasitic on other animals
Trochophores
Bilateral planula larvae
Free-swimming
Free-swimming
Which of the following is provided by a pseudocoelom?
Greater freedom of movement
Space for development and differentiation of systems
A simple means of circulation or the distribution of materials
A storage place for waste products
All of the choices are correct
All of the choices are correct
Ribbon worms and flatworms both have
A flow-through digestive tract
Flame cells
A blood-vascular system
An eversible proboscis
Mostly parasitic lifestyles
Flame cells
The lophophorate phyla are grouped together because
They all belong to the deuterostome branch of the bilateral animals
They all possess a specialized crown of tentacles specialized for sedentary filter feeding
They all lack a true coelom
All appear to be derived from the Entoprocta ancestors
They simply do not fit anywhere else
They all possess a specialized crown of tentacles specialized for sedentary filter feeding
The larval stages of all three lophophorate phyla are
Also sessile, having budded off from the parent
Parasitic on other animals
Trochophores
Bilateral planula larvae
Free-swimming
Free-swimming
