Biology Final pt 2

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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

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