Animal Diversity I

Grantia (3), Scypha (2), Leucosolenia (2), Spongilla, Commercial sponge, Venus Flower; lack true tissue/body cavity (spongocoel), amoebocytes help with digestion, osculum is the opening, choanocytes are collar cells that generate a water current

Grantia

navy blue, pretty, navy blue, directional spiralz

scypha l.s. (bigger than Grantia)

scypha spicules, ish

Leucosolenia; green moss

spongilla

Euplectella Venus flower

consists of the classes Hydrozoa, Scyphozoans, and Anthozoans; dipoblastic; radially symmetrical, have tissues, exhibit behavior; no learning; old Eumetazoa; one opening

Cnidarian; found on tentacles, are cells for defense and prey capture, contain cnidae that explode out

Cnidaria; organelles within cnidoytes that eject a stinging thread

Hydra LS/kind of hydra WM; little bulbous thingy towards bottom is important, know tentacles; colored red in slide; class hydrozoa

hydra nematocyst; purple blob; class hydrozoa

hydra CS; class hydrozoa

preserved Obelia Coelenterate, medusa form; class hydrozoa

preserved Obelia Coelenterate, colony form; class hydrozoa

preserved Portuguese man-of war; class hydrozoa; colony of medusae and polyps acting as a single organism

preserved jelly fish; class Scyphozoans

preserved sea anemone; class anthozoans

flatworms; flattened dorsoventrally; tripoblastic BUT acoelomates; include class Turbellaria (planarians), Trematodes (flukes), and Cestoidea (tapeworm)

Planarians; have light-sensitive eye spots and nerve nets in head that connect to a ventral nerve cord; can learn; are hermaphrodites; body covered by ciliated epidermis

planarian WM/living; don't forget about the auricle

Planaria (class Turbellaria) CS; clear space is the pharyngeal (digestive?) cavity

sheep liver fluke; white inside, gray (looks a little dotted) outside, looks like a thinner leech; class Trematoda

oriental liver fluke; class Trematoda

Taenia pisiformes; class cestoidea; this is really just the scolex (from top to bottom, hooks, rostellum and scolex), the rest of the body looks like rectangular segments and these house the reproductive organs that break off and spawn [budding zone]

consists of class Polychaetes (clamworms), class Oligochaeta (earthworms) and class Hirudinea (leeches); segmented worms whose bodies are a series of fused rings; are COELOMATES

include the clamworm and sea mouse; marine; hermaphroditic; each segment has a pair of PARAPODIA, used for gills and locomotion (in phylum Annelida)

preserved clamworm, Nereis; class polychaetes

preserved sea mouse; class polychaetes; in phylum Annelida

earthworms; have chaetae made of chitin for traction and burrowing; nervous tissue runs VENTRAL to gastrointestinal tracts; e/a segment is walled of by a septum (in phylum Annelida)

earthworm CS; class oligochaeta; in phylum Annelida

earthworm anatomy (study in lab book); in phylum Annelida

most specialized annelids; lost chaetae; hirudin prevents blood from clotting; in phylum Annelida; preserved specimen is gray and flat looking

chiton, snail, clam, oyster, mussels, squid, octopus, mollucs; most share 4 common features: have a hard external shell for protection, a mantle that secretes the shell, the visceral mass where most organs are located, and a mucular foot used for locomotion

chitons; have a broad foot, 8 dorsal plates and a thing going all the way around called a girdle

preserved Chiton; class polyplacophora, phylum mollusca

snailz; use radula to feed, have tentacle and occular tentacle to see; have muscluar foot; class Gastropoda; phylum mollusca

in the phylum mollusca; shell divided laterally into 2 halves; are filter feeders, and use gills for feeding/gas exchange; have eyespots to detect shadows; the mantle clings to the shell; include oysters, clams (know anatomy) and mussels

phylum Mollusca; includes squid (have tentacles, arms, eye, funnel, collar, mantle and fin), octopus (have suction cups, mouth, arm) and mollusc; have a closed circulatory system, complex brain, well developed sensory organs

Nautilus anatomy