9th-Biology Ch. 18

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porifera

"pore bearer"

porifera

sessile, asymmetrical, no true tissue (just cells living together), filter feed, reproduce asexually (hermaphrodite), and sexually

porifera

osculum, incurrent pores, collar cells, amebocytes, spicules, spongin,

osculum

hole at the top of porifera

incurrent pores

side pores where water comes in porifera

collar cells

set up the current, catch food and sperm, digest food in porifera

amebocytes

taxis, transport

SPicules

suPPort for SPonge

spongin

all the support fibers of porifera

cnidaria

hydra, jelly fish, sea anemone, coral, Portuguese man of war

cnidaria

radial symmetry, 2 tissue layers (endoderm & ectoderm), either polyp or medusa, mouth, gastrovascular cavity, tentacles, cnidocytes, nematocysts, nerve net, reproduce asexually (budding) and sexually (egg and sperm)

polyp

tentacles on top

medusa

tentacles on bottom

mouth

middle of tentacle

gastrovascular cavity

digest food in cnidaria

cnidocytes

contain the stinger

nematocycts

stinger

nerve net

instead of brain has this where whole body responds to action in cnidaria

platyhelminthes

flat worms, planaria, tape worm, fluke

planaria

3 tissue layers, BS, acoelomate, head, eyespots, cilia, mouth, pharynx, flame cells, reproduce by regeneration and egg & sperm

cephalization

concentration of nervous tissue at anterior end of body in planeria

eyespots

in planaria. can sense light and darkness

cilia

help planaria. move

mouth

middle of body in planaria.

pharynx

food sucker in planaria.

flame cells

get rid of nitrogen waste, "kidneys" of planaria.

tapeworm

scolex, hooks, suckers, proglottids

scolex

head of tapeworm

hooks

can hook onto the invaded individual of a tapeworm

suckers

get food in tapeworm

proglottids

reproductive segements of tapeworm

nematoda

round worm, oscaris, trichina, hook worm, pin worm

nematoda

BS, 3 tissue layers, pseudocoelomate, tapered at both ends, thick cuticle, live everywhere

rotifera

rotifer

rotifera

crown of cilia, live in water, free living (not parasitic)

annelida

segmented worms, earthworm, leech

annelida

worms, coelomate, protostome, BS, closed circ. system, 3 tiss. layers, live in dirt or water

earthworm

clitellum, pharynx, esophagus, aortic arches, crop, gizzard, ventral nerve cord, intestine, seta, nephridia, reproduce sexually but hermaphrodite

clitellum

produces slim ring in earthworm

pharynx

sucks dirt, located past the mouth in earthworm

esophagus

food tube in earthworm

aortic arches

pump blood in earthworm

crop

stores food in earthworm

gizzard

grinds food in earthworm

ventral nerve chord

runs along belly of earthworm

intestine

digest and absorb food in earthworm

setae

bristles on outside of body to help earthworm move

nephridia

filter out nitrogen waste in earthworm

mollusca

protostome, coelomate, BS, 3 tiss. layers, live in many habitats, open circ. system,

mollusca

gastropoda, bivalves, cephalopods, ex. octopus

gastropoda

mollusca, have on shell or no shell, radula, nephridia, ex. snails and slugs

radula

tongue like scrapper that gets algae off surface

nephridia

filters out nitrogen waste

bivalves

mollusca, have 2 shells, filter feed, adductor mussels (hold shell together) ex. oysters, muscles, scallops, clams

cephalopods

mollusca, have tentacles, radula and beak, closed circ. system, known as brainy invertebrates, ex. squid, cuttlefish

arthropoda

"jointed foot", millions of species, coelomate, protostome, 3 tiss. layers, exoskeleton that is molts, segmented (2, 3, or more segments), resperation, trachae (spiracles) book lungs or gills, have good sense organs (antenna & eyes), brain and ventral nerve chord, open circ. system, malphgian tubes, reproduce sexually (internal fert. on land but not in aquatic) ex. ant and lobster

spiracles

openings to the outside of arthropods to breathe

antenna

detect pheromones, used by arthropoda as part of sense system

colidascope

eyes of arthropods look like the view through a ______

malphgian tubes

filter out nitrogen waste in arth.

arthropoda

classes: arachnida, crustaceans, chilopoda, diplopoda, insecta

arachnida

arth., 3 bod segs, 8 legs, ex spiders, tick, mite, scorpion

crustaceans

arth., mostly live in water, 5 pairs of legs, ex. crab, shrimp, crawfish, lobster, barnicle

chilopoda

arth., centipedes, 1 pair of legs per seg., eat meat

diplopoda

arth., milipedes, 2 pairs of legs per seg. eat plant matter

insecta

considered most successful arthropoda class, 3 body segs., 6 legs, wings, ex. bees, flies, skeeters, wasp, hornet, termite, go through metamorphosis

complete metamorphosis

egg to larva to pupa to adult

incomplete metamorphosis

egg to nymph (mini adult) to adult

echinodermata

spiny skin, ex. starfish, sea star, brittle star, sea urchin sand dollar, BS, deuterostome, coelomate, water vascular system, tube feet

coelomate

body cavity lined with mesoderm

protostome

blastopore first develops into a mouth, has spiral cleavage

deuterostome

blastopore first develops into anus, has radial cleavage

chordata

dorsal hollow nerve chord, notochord(become vertabrae backbone), pharyngeal gill slits, post anal tails

chordata

agnatha, chondrichthyes, osteichthyes, amphibians, reptiles, aves, mammals

agratha

jawless fish, ex. lamprey, hagfish

alfactory

smelly thingy

chondrichthyes

cartilage fish, lateral line, olfactory sense, placoid scales, ex. shark, ray, skate)

osteichthyes

bony fish, olfactory sense, lateral line, swim bladder, buoyancy, opeculum, 2 chambered heart

opeculum

bony plate over gills

amphibians

metamorphosis, go to water to reproduce, 3 chambered heart, external fertilization, amplexus, ex. frog, toad, salamander)

reptiles

amniotic egg (water proof), internal fert., partial septum in heart, ectothermic, Jacobson's organ, ex. lizard, snake, turtle, crocs, gator

aves

birds, beaks, feathers, 4 chambered heart, endothermic

mammals

hairs, endotherms, 4 cham. heart, mammary glands, types: monotremes, marsupials, eutherians

monotremes

lay eggs ex. duck billed platypus, echidna

marsupials

pouched

eutherians

placentals

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