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BIO TEST 4-PART 1
BLAH blah blah
27
Biology
Undergraduate 1
04/25/2013

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Term
spiral cleavage
Definition
cell division plane diagonal to embryo's vertical axis
Term
radial cleavage
Definition
cell division is perpendicular and parallel to embryo's vertical axis
Term
determinate cleavage
Definition
fate of embryonic cell determined early
Term
indeterminate cleavage
Definition
fate of embryonic cell determined later
Term
deuterostomia
Definition
radial cleavage, inter determinate, anus developed from blastopore.
Term
protostomia
Definition
spiral cleavage, determinate, mouth developed from blastopore
Term
lophophore
Definition
feeding structure
Term
trochophore
Definition
larval stage
Term
ecdysis
Definition
secretes exoskeleton
Term
porifera
Definition
animal phylum consisting of organisms commonly called sponges; marine, asymmetrical.
Term
choanocytes
Definition
flagellated collar cells
Term
asymmetry
Definition
not symmetrical
Term
ostia (ostium)
Definition
small pores
Term
sessile
Definition
does not move
Term
sequential hermaphrodite
Definition
can change sex once over their lifetime
Term
biotoxin
Definition
for protection from being eaten and competition.
Term
function in reefs
Definition
filter water, concentrate nutrients
Term
choanoflagellata
Definition
protist like, colonial (separate cells), flagellated
Term
cnidaria
Definition
hydras, jellies, anemones, coral reef secretors, radial symmetry, most marine, sessile.
Term
nerve net
Definition
web like system of neurons
Term
diploblastic
Definition
two germ layers (ectoderm, endoderm)
Term
planktonic
Definition
drifts around in the water
Term
medusa
Definition
bowl-like, mouth down, jellies
Term
polyp
Definition
cylindrical, mouth up, hydras, sea anemones, coral organisms.
Term
cnidocyte
Definition
cell specialized for defense/capture of prey
Term
extracellular digestion
Definition
digestion outside of cell
Term
intracellular digestion
Definition
digestion inside of the cell
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