exam 2 Flashcards
what class is not considered an invertebrate?
myxini
hexactinellida symmetry
asymmetrical
trematoda symmetry
bilateral
nemertea symmetry
bilateral
cubozoa symmetry
radial
myriapoda symmetry
bilateral
tardigrada symmetry
bilateral
“flower animals” class
anthozoa
members of phylum mollusca:
polyplacophora, bivalia, cephalopoda, gastropoda,
ribbon worm taxon
nemertea
giant squid taxon
cephalopoda
chiton taxon
polyplacophora
sea star taxon
asteroida
glass sponge taxon
hexactinellida
crayfish taxon
crustacea
platyhelmenthes characteristics
- triploblastic
- no circulatory system
- bilaterally symmetric
- some cephalization
- have a gastrovascular cavity
(T/F) an organism that is diploblastic does not contain mesoderm
true
a trait that you would expect to observe in phylum cnidaria only
mesoglea
not members of echinodermata
crustacea
leeches taxon
annelida oligochaeta
“water bears”
tardigrada
first organisms to exhibit a closed CS
earthworm
(T/F) ecdysozoa is a phylum of animals
false (superphylum)
Which of following phyla produce veliger la special type of trochophore) larva?
mollusca
gastropoda…
- means stomach foot
- contains organisms known as snails and slugs
- undergo torsion during normal development
- often use a radula as part of their feeding strategy
what kind of CS do crustacea have?
closed
what kind of CS do asteroida have?
water vascular
what kind of CS do oligochaeta have?
closed
what kind of CS do bivalia have?
closed
what kind of CS do cephalapoda have?
closed