organismal biology exam 3: hawthorne

all phylums or classes

Marine, 2 calcified shells, upper shell is larger, may have a pedicle

brachiopoda

Has a crown of ciliated tentacles around the mouth

lophophorata

Marine, chitinous tube dwelling, worm-like, U-shaped gut, sessile

phoronida

Contains crown of cilia that beat synchronously

syndermata

Mostly parasitic, some are free living, simple or no gut

platyhelminthes

Marine and freshwater, colonial, has hard tubes, can resemble moss

ectoprocta

Diverse with a large size range, has a foot, mantle, radula, well developed organ systems

mollusca

Worms with a proboscis, complete cut, circulatory system

nemertea

Microscopic, worm-like, aquatic, contains spines on ventral surface

gastrotricha

Segmented worms with repeated organs, including an excretory system

annelida

Coenocytic hyphae, non-flagellated spores, zygosporangia, heterotrophic by assimilation

mucoromycota

Coenocytic hyphae, parasitic or commensal, spores lack flagella

zoopagomycota

Symbiosis between mycobiont and photobiont

lichen

Coenocytic hyphae, microscopic, freshwater/soil, flagellated zoospores, some are parasitic

chytridiomycota

Biradial symmetry, has colloblasts, iridescent, bioluminescent, rows of fused cilia propel it

ctenophora

Has many holes, lacks tissues, filter feeders, flagellated larva, sessile adult

porifera

No known sexual stage, spores produced by mitosis

imperfect

Radial symmetry, can be sessile polyp or motile medusa, stinging tentacles

cnidaria

Sexual spores only, septate monokaryon, large with gills, cap, stalk

basidiomycota

Septate monokaryon, some large, many microscopic, plant pathogens, asexual and sexual spores

ascomycota

Chitons, oval-shaped body, shell with 8 plates, muscular foot, radula

polyplacophora

2 shells of the same size, incurrent and excurrent siphon, gills

bivalvia

Some parasites, mostly free living, high regenerative powers, circular, longitudinal, and parenchymal muscles

rhabditoophora

Marine, freshwater, terrestrial, sedentary, ectoparasitic and predaceous, no setae, superficial annuli, oral and posterior suckers

hirudinea

Most alternate between polyp and medusa, some only polyp

hydrozoa

Belly foot, shell, eye stalks

gastropoda

Head foot, mantle forms body tube, 8 arms with suckers, 2 tentacles with suckers

cephaopoda

Only polyps, colonial or solitary, large, subdivided gastrovascular cavity, can sting

anthozoa

Box-shaped, medusa is dominant phase, topical oceans, highly toxic

cubozoa

Marine and freshwater, silicious spicules or spongin fibers, leucon body type

demospongiae

All parasitic, absorb nutrients, anterior end has suckers and hooks, posterior end has sacs of sex organs

cestoda

All marine, calcareous spicules, small, ascon, syncon, leucon body types

calcarea

Marine, freshwater or terrestrial, few very small setae, clitellum

oligochaeta

All marine, many setae, parapodia, distinct head, sedentary or errant

polychaeta

All parasitic, flukes, has a snail host

trematoda

Medusa is dominant phase, many bioluminescent

scyphozoa

Deep marine, siliceous 6-rayed spicules, syncytium, syncon/leucon intermediate body type

hexactinellida