What kind of digestive tract do roundowrms have?
Complete digestive tract
What are the bodies of roundworms covered with?
What are ecdysozoans? Name an example that's a worm.
Animals that molt as they grow, roundworms
T/F Since roundworms lack re
What is the opening of a pharynx?
Through what processes do flatworms englulf food?
Answer: Most food is engulfed via phagocytosis while some are partly digested
T/F Flatworms lack a respiratory system but have a circulator
T/F Obelia medusa make egg or sperm.
Describe body form of Portuguese Man of War?
The sting of a Portuguese Man of War is actually a colony of polyps and
T/F The sting of a Portuguese Man of War is capable of paralyzing large fish and
Flatworms are part of which phylum?
What kind of symmetry do flatworms posses?
T/F Flatworms are diploblastic.
False, they are triploblastic
T/F Flatworms have a body cavity partially surrounded by mesoderm.
What are cercomeromorpha and trematoda? What group?
Group Neodermata, Trematoda are flukes, Cercomeromorpha are tapeworms.
Planarians are in which group?
What environments are planarians found in?
Mostly freshwater, some moist terrestrial, an
How do Hydra asexually reproduce?
Answer: Through regeneration and budding
T/F Hydras are gonochoric.
Answer: False, Hydras are hermaphroditic
T/F Hydras cross fertilize.
What animal is a colonial marine hydroid?
Describe the schistosoma mating position?
Female holds male within a long groove
What are the steps in the Schistosoma life cycle?
Male + Female mate, fetilized eggs break through blood vessel walls, pass
through feces/urine, ingested by snails, turn int
What animals are parasites of vertebrate hosts?
Liver and blood flukes
T/F Flukes are capable of movement via cilia.
False, Flukes lack cilia
T/F Flukes lack eyespots.
How many suckers do flukes have and what are they?
2 suckers, Oral sucker, Ventra
What serves as a hydrostatic skeleton in pseudocoelomates?
Fluid filled pseudocoelom
What phyla are pseudocoelomates?
Phyla Nematoda and Rotifera
Roundworms belong to what phylum?
Vinegar eels, eelworms, Ascaris, pinworms,and trichina wor
What body forms do star jellies have?
How do star jellies attach to the substratum?
Answer: They use their stalk
Comb jellies are in what phylum?
Answer: Phylum Ctenophora
T/F Ctenophora are marine and freshwater.
Anser: False, all are mar