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81 Cards in this Set
- Front
- Back
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mesohyl |
(Porifera) gelatinous middle material, contains spicules and amoebocytes |
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totipotent |
(Porifera) cells capable of transformation into any other cell |
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Alternation of Generations |
(Cnidaria) alternation of asexual (polypoid) and sexual (medusoid) generations |
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collenchyma |
(Cnidaria) noncellular mesoglea |
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gonopalpon |
(cnidaria) supports gonodendron |
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gonophores |
(Cnidaria) on gonozooid- produce medusae |
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manubrium (hypostome) |
(Cnidaria) hydranth part, supports mouth and tentacles |
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pedal laceration |
(Cnidaria) Anthozoa asexual reproduction; anemone moves, part of pedal disc left behind |
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rhopalium |
(Cnidaria) sensory structure. center between lappets on medusa bell margin |
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siphonoglyphs |
(Cnidaria) Anthozoa- at ends of slitlike mouth for water circulation |
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aboral sense organ |
(Ctenophora) with statocyst- balance and swimming |
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ctenes |
(Ctenophora) ciliary plates- comb rows. swimming |
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determinant (mosaic) cleavage |
(Ctenophora) all cytoplasm predetermined |
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dissogeny |
(Ctenophora) regression at maturity |
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metamerism |
(Bilateral phyla) coelom and segmentation |
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calthrops |
spicule shape- 4 rays, all same size |
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clads |
short rays of a spicule |
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rhabdome |
elongated ray of a spicule |
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diaene |
spicule mutation, loss of a clad |
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triene |
spicule mutation, loss of a rhabdome |
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megascleres |
large spicules |
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microscleres |
small, throughout mesohyl |
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ostia |
(Porifera) entry pores, numerous |
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oscula |
(porifera) exit pores, few |
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pinacocytes |
pinacoderm, outer layer |
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choanocytes |
choanoderm, inner layer. flagellated cells |
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prosopyle |
opening from incurrent canal into flagellated chambers |
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apopyle |
openings from flagellated chambers into excurrent canals |
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micropyle |
gemmule exit opening- favorable conditions & development |
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reduction bodies |
marine, sponge collapses in unfavorable conditions |
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gemmules |
freshwater, due to changes in water temperature |
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spicules |
rod-shaped internal skeleton, calcareous or silicious |
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spongin |
pulpy protein of porifera internal skeleton |
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amphiblastula |
hollow larvae |
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coelogastrula |
develops internally |
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trophocytes |
nurse cells for archaeocytes |
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amoebocytes |
produce gametes |
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adradial canal |
straight, off gonads |
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perradial canal |
branched, between gonads |
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interradial canal |
branched, off gonads |
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blastostyle |
reduced, fingerlike gonozooid |
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gonodendron |
expanded branched gonozooid |
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cnidocyte |
contain nematocysts |
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nematocyst |
defense barbs within cnidocyte |
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cnidocil |
triggering mechanism for the cnidocyte/nematocyst |
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coenosarc |
stalk living tissue |
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perisarc |
stalk nonliving tissue |
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corallum |
nonliving coral mass |
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corallite |
coral polyp skeleton |
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craspedote |
has velum |
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acraspedote |
no velum |
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exumbrella |
convex aboral surface |
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subumbrella |
concave oral surface |
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gastrozooid |
feeding polyp |
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gonozooid |
reproductive polyp |
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gonangium |
reproductive polyp, covered by gonotheca |
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hydranth |
oral end of cnidaria feeding polyp, covered by hydrotheca |
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hydrocaulus |
hydroid colony stalk |
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hydrorhiza |
horizontal rootlike support |
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mesoglea |
cellular intermediate material produced by mesenchyme |
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mesenchyme |
produces mesoglea |
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monopodial |
single budding along branch |
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sympodial |
two buds at branch |
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planula |
free-swimming ciliated larvae |
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actinula |
more advanced larvae |
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scyphistoma |
Scyphozoa first polyp |
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strobila |
Scyphozoa second polyp |
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ephyra |
Scyphozoa pre-medusa |
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stereogastrula |
solid ball ancestral form, phagocytosis |
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metagastraea |
hypothetical ancestral eumetazoan, mouth & digestive system |
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strobilization |
budding/transverse fission off strobila to produce ephyra |
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tentaculozooid |
long, dangling protective tentacle(Physalia colony) |
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dactylozooid |
club shaped, protects tentaculozooid |
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adaplozooid |
similar to gastrozooid but no mouth |
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thecate |
hydrotheca with theca |
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athecate |
hydrotheca without theca |
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colloblasts |
similar to nematocysts - often retractable |
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cydippid |
tentaculata larvae, free swimming |
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beroid |
nuda larva, similar to cydippid, no tentacles |
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tentaculata |
tentacles |
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nuda |
no tentacles |
