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24 Cards in this Set
- Front
- Back
- 3rd side (hint)
Spiralia
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grow by adding additional mass to an existing body
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protostomes
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Platazoa
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move by ciliary action
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lophotrochozoa
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move by muscle contractions
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ecdysozoa
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molting animals
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(4) characteristics for Phylum: Porifera
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1) no true tissues
2) asymmetrical 3) free-swimming larvae, but sessile adult stage 4) reproduce asexually through fragmentation & sexually |
n
a f r |
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Body characteristics of Porifera
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a) choanocytes
b) outer epithelial layer c) mesohyl i) spicules ii) spongin |
c
o m s s |
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Eumetazoans: (3) types of true tissue
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1) ectoderm: epidermis and nervous tissue
2) endoderm: digestive tissue 3) mesoderm: muscular tissue (only in bilateral animals) |
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Symmetry of Eumetazoans (2) types
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radial
bilateral |
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Phylum Cnidarians: "Polyp Form"
(5) Characteristics |
1) cylindrical
2) attach to firm substrates 3) solitary or in colonies 4) one opening for both mouth & anus 5) build a chitinous or calcareous external or internal skeleton |
stick and live on the ground of the sea floor mainly
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Phylum Cnidaria: "Medusa Form"
(5) characteristics |
1) free-living
2) often umbrella-shaped 3) mesoglea, thick like jelly 4) mouth/anus opening surrounded by tentacles 5) cnidocytes |
Jellyfish
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Cynidocyte
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specialized cells on tentacles and body surfaces
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jellyfish
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Nematocytes
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a structure within cnidocyte that contain a small powerful harpoon that may be barbed or contain a toxin.
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jellyfish
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Cnidarian Body structure
(2) features |
1) gut cavity
2) no circulatory, respiratory or excretory systems. |
g
n,c,r,e |
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Cnidarians' Life cycle (2) main elements
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1) polyps reproduce asexually & sexually
2) medusae reproduce sexually |
p
m |
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Four Classes of Cnidarians
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1) hydrozoa - microscopic
2) scyphozoa - true jellyfish 3) cubozoa - boxed jellies 4) anthozoa - sea anemones and corals |
h
s c a |
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Phylum Ctenophora "comb jellies"
(4) characteristics |
1) more complex with mouth and anal pore
2) colloblast - special type of cell that discharges 3) use cilia for locomotion (largest animal to use cilia for locomotion) 4) radially symmetrical |
comb jellies: oldest ancestors
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Bilaterian Aceolomates: (4) classes in the Phylum Platyhelminthes
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1) tubelleria - flatworms
2) monogenea - parasitic fluke 3) trematoda - parasitic fluke 4) cestoda - tapeworms |
parasitic worms
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(Phylum Platyhelminthes) Flatworm
characteristics |
1) free-living
2) lack circulatory system 3) have (CNS) 4) hermaphroditic |
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Life Cycle of the Liver Fluke
(Phylum Platyhelminthes) |
- determinant hosts: human, sheep
- indeterminant host: snail, fish. - mature in the bile duct |
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(Phylum Platyhelminthes)
Cestodes (Tapeworms) |
1) Scolex - hook or suckers
2) Proglittids - series of repeptive sections. |
s
p |
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Cycliphora (worms)
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- new microscopic phylum found on mouthparts or claw of lobster that have a unique reproduction
- dwarf males |
lobsters
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(2) Aceolomate Misclassifications
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1) acoel flatworms - bilateral acoelomates; primitive nervous system; no digestive cavity
2) nemertea or ribbon worms - fluid-filled sac; close related to coelomates than acoelomates |
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Roundworms cause Human diseases (Nematodes) 4 diff. types
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1) trichinella - in undercooked pork & infect muscles
2) pinworms - found in human rectums 3) ascaris - found in intestines 4) filariasis - live in lymphatic system cause by serveral species of roundworms |
t
p a f |
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Pseudocoelomate: Phylum Rotifera
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1) very small, mostly aquatic animals
2) corona - ciliated structure used for locomotion and food-gathering 3) complex jaw 4) complete gut passes from mouth to anus |
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