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87 terms

Biology Final pt 2

STUDY
PLAY
Protostomes have ________ and __________ cleavage
spiral
determinate cleavage
Internal organs, including gonads, and reproductive organs develop in the _________
coelom
The coelom transports _________ and __________ internal organs
materials
protects
What type of mesoderm lines the coelom?
peritoeanitum
The coelom serves as a __________ by contracting muscles to push against the tube of fluid
hydrostatic skeleton
Two examples of Ecdysozoa
nematodes
arthropods
Platy means ________ and helminthes means _________
flat
worm
True coelom is a __________-__________ body cavity completely lined by ___________
fluid-filled
mesoderm
Tube with in a tube bodyplan:
___________- outer tube
___________- inner tube
body wall
digestive tube
Two branches f Protostomes
Lophotrochozoa
Ecdysozoa
Three examples of Lophotrochozoa
Platyhelminthes
mollusks
annelids
Platyhelminthes are what type of coelom
acoelomate
Platyhelminthes are ____________ meaning they have both male and female parts
hermaphrodites
How do platyhelminthes get nutrients by
diffusion
Are platyhelminthes free-living organism>
yes
Example of asexual reproduction down by platyhelminthes?
binary fisson
Binary fission is when it
splits down the middle and each side makes a new side
What type of nervous system do platyhelminthes have
ladder-type nervous sustem
Platyhelminthes' brain is composed of two
ganglia
Ganglia are
a collection of nerves
What is the flame cell and what does it do?
Protonephridia
function in osmoregulation and disposal of metabolic waste
also first kidney like organ
An auricle is
Do platyhelminthes have them?
an ear or 1st figure into sensor organ
yes
The mouth leads into the
pharynx
Larva always live in an
intermediate host
3 classes of Platyhelminthes
Turbellaria
Trematoda
Cestoida
Example of Cestoida
parasitic tapeworms
Schistosoma is a
What type of disease do they cause
Where do they live
blood fluke
schistosomiasis
freshwater
Where do the class Turbellaria live
marine/fresh water
What has a ventral foot used for locomotion
mollusca
Examples if Trematoda
parasitic fluke , blood luke, and endoprasite
Parasitic flukes infect the
liver
Taenia solium is what
tapeworms in pork
Blood flukes have a ___________ which is a tough layer on the endoparasite
tegument
The tegument resists what?
immune system of the host
Examples of Turbellaria
free-living flatworms
planarians
Taenia saginatus is what
tape worms in beef
The blood fluke turns into a _________ larva then grows into a ___________larva
ciliated
fork-tailed
What is cephalization
evolution of the head
Tapeworms have _________ or _________ for holdig on to their host
suckers
hooks
In a tapeworm there is a head called ___________ where the hooks and suckers are
scolex
The scolex bury into the
gut
The tapeworm is a segmented organism made of
proglottids
Mollusca is usually a _____________ animal covered by a ________.
soft-bodied
shell
The formation of the head increases the effectiveness of the animal to
actively find food, shelter, and mates
detect enemies
Proglottids are added
behind the neck
Each proglottid has both
eggs and sperm
What do you take to kill tapeworms
Methyl trexate (mustard gas)
What is the mantle
layer over visceral mass that secretes shell
Mollusca has a ______ gut
1-way
What is the visceral mass
reproductive organs under the shell
Mollusca has ____________ fertilization, ______ circulatory system, and ______ ________ on the mouth
internal
open
sharp razors
Cephalopods have a _____________ circulatory system
closed
Most marine mollusks have free-swimming, ciliated ______________ larva.
trochophore
Bivalves are ______________ feeders
suspension
Bivalves ingest their food by slicing off bites with their __________________.
rasplike tongue
Clams are ____________________ feeders.
suspension
Clams have an _____________ muscle that hold thee two shells together
abductor
H₂O goes in through the clam by an __________________ and out by ____________________
incurrent siphon
excurrent siphon
Trochophore larva undergo
torsion
3 classes of Mollusks
gastropoda
bivalvia
cephalopoda
What is the largest class of mulluks
gastropoda
Examples of gastropoda
snails
slugs
Gastropoda undergoes torsion which means
they twist their visceral mass as a larva making their anul opening behind their head
The phylum Gastropoda is a ________ coelomate, has an _______ circulatory system, and a ________ for locomotion
true
open
foot
Examples of class Bivalvia
clams
scallops
oysters
Bivalvia has a two part shell that is connected by the
abductor muscle
Movement of Bivalvia
Oysters and barnacles-
clams and muscles-
scallops-
fixed
burrow in the sand/mud
snapping motion of shells
Bivalvia have a __________ gut, ________ circulatory system, and __________ ganglion by the foot
1-way
open
pedal ganglion
The pendal ganglia are the
nerves in the foot
Cephalo means ...... poda means
head
foot
Gastro means..... poda means
stomach
foot
Examples of cephalopoda
squids
octopods
Nautilus
Cephalopoda is a class of ___________ swimmers
predatory
Cephalopoda have a _________ circulatory system
closed
Octopods have both ___________, cells for colour, and ______________, which change the texture and colour
Chromatophore
Euridophores
Octopods use chromatophores and euridophores to___________ or learn to copy surroundings
mimicry
3 classes of Annelida
Polychaeta
Oligochaeta
Hirudinea
Annelida are segmented worms. They are segmented both
internally and externally
Annelida has a large _______________ coelom
compartmentalized
Polychaeta are marine worms with _______, appendages for locomotion
parapodia
Oligochaeta are ______worms that are divided into more than _______ segments
earthworms
100
Hirudinea are _______ that have suckers
leeches
Nematoda are roundworms whose body is covered by a tough________ that helps prevent
cuticle
desiccation
What are some parasitic nematodes in humans
Ascaris
hookworms
pinworms
trichina worms
Arthropoda are segmented with jointed appendages and have an armorlike ___________ made of _______
exoskeleton
chitin
Arthropoda ______ to grow
molt
Arthropoda have an _____ circulatory system, and either ________, for gas exchange, or __________/book lungs
open
gills
tracheae