Biology

Front 1

Phylum Platyhelminthes - name 3-4 classes

Back 1

class turbellaria - free living parasites ex planaria
class trematoda - endoparasitic ex flukes
- class monogenea - ectoparasitic ex flukes
class cestoda - endoparasitic ex tapeworms

Front 2

Platyhelminthes - Flat worms describe body plan

Back 2

most simplistic body plan w/ muscles

unsegmented acoelomates
triploblasts
flattened body = addaption for gas exchange via difuision

Front 3

platyhelminthes - flatworms describe nervous system

Back 3

longitudal and transverse nerve cords
neurons organized into two types - sensory & motor
sense organs - statocysts- balance, ocelli - light sensing eyes, auricles - primitive hearing, rheoreceptors - sense of direction of water current
1st ganglia/brain

Front 4

platyhelminthes - flatworm describe digestive system

Back 4

gastrovascular w/ single opening EXCEPTIONS_TAPEWORMS
mouth->pharynx-> intestine
digestion extracellular- intestinal lining secretes enzymes that begin digestion

&

interacellular(phagocytosis)
waste is removed through intestine then pharynx
NOTE - respiratory, circulatory, & skeletal systems ABSENT

Front 5

Platyhelminthes - flatworms describe excretory system

Back 5

osmoregulation via protonephridia - flame cells - act as primitive kidneys

Front 6

Phylum Platyhelminthes

class turbellaria

describe habitat/feeding/movement/repro.

Back 6

habitat - free living, most aquatic

feeding - hunt protists and small animals

movement - swim by undulation, crawl using cilia on ventral surface, limited muscle control, only one w/ cilia on epidermis, mucus tract

repro - sexual - hermaphroditic

asexual - regeneration (anything or part that is cut)

Front 7

Phylum platyhelminthes

class trematoda

describe habitat/feeding/movement/repro.

Back 7

feeding - endoparasitic, vertavrate or mollusk host (multiple hosts) attach w/ hooks or suckers

habitat - gulp host tissue & fluids through mouth

movement - little movement

repro - sexual in definite/final host

asexual - budding/fission

Front 8

Phylum platyhelminthes

class cestoda

describe habitat/feeding/movement/repro.

Back 8

feeding - endoparasitic, vertabrate hosts, hooks and suckers

habitat - no mouth/digestive tract obtains nutrients by diffusion

movement - little movement/attach to host

repro - sexual in definitive host

asexual - intermediate host

Front 9

JUST KNOW - this is only in final host

mature proglotids are farthest from the head, immature are closer to the head

ea pro contains egg and sperm, they cannot fertilize w/in a pro but they can fert w/ the ones next to ea. other

Front 10

Phylum Gastrotrichs

know body plan, habitat, feeding, movement, & repro

Back 10

body plan - acoelomates - complete digestive tract, complete tube

habitat - marine and fresh water

feeding - tufts of cilia on head

movement - trunk covered w/ cilia

repro - sexual , hermaphroditic

asexual - parthenogenesis (creating an egg that will become an organism w/o fertilization) - most male gonads are inoperable

Front 11

phylum rotifers

know body plan, habitat, feeding, movement, & repro

Back 11

body plan - pseudoceolomates, complete digestive tract, complete tube

habitat - mostly fresh water, some marine and terrestrial (damp soil)

feeding - corona (of cilia) suspension feeding, rotates/spins - creates stronger water current then gastros

movement - corona/cilia used for locomotion

repro - sexual dioecious

asexual parthenogenesis

some speices do not have recorded males

Front 12

class lophotrochozoa both are coelomates

Back 12

lophophorates ex bruises & brachiopoda both have lophophore & horseshoe shaped crown of ciliated tentacles surrounding mouth