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Lab 22
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What is a bauplan?
body plan
The four characteristics that are important when classifying animals:
The presence or absence of tissue types
Body symmetry
Presence or absence of true body cavity
Embryonic development
Animals without tissue vs Animals with true tissue
prometazoa
eumetazoa
multicellular animals that do not have tissue and belong to the parazoa
Porifera
Sponges
The formation of all three tissue types makes an organism __ rather than __.
triploblastic
diploblastic
The animals in the Phyla __ are diploblastic
Cnidaria
animals that have a true body cavity that consist of mesoderm enclosed cavities within an ectoderm/endoderm cavity
coelomates
__ form from developing mesoderm, while __ develop from out pocketing of the gut
schizocoeloms
enterocoeloms
flatworms
Platyhelminthes
a concentration of nerve and sensory tissue near the anterior end
cephalization
a digestive tract that consists of an open sac
gastrovascular cavity
If you have a gastrovascular cavity, this means:
there is a common opening for both food and waste materials to pass through
free-living flatworms
turbellaria
they have extraordinary regenerative powers
turbellaria
flukes, parasitic flatworms lacking a ciliated epidermis
trematoda
tapeworms
cestoda
the anterior end of the animal and is used ti attach to the intestine wall of the host
scolex
round worms
Nematoda
make and female individuals means a species is __
dioecious
when an animal has both male and female organs
monoecious
segmented worms
annelida
when an animal has true segments arranged linearly along the anterior-posterior axis
metamerism
many setae (hairs)
Polychaeta
free swimming larva stage
trochophore
earthworm
lumbricus
Author
cep9654
ID
271660
Card Set
Lab 22
Description
Final
Updated
2014-04-24T16:12:24Z
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