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WORM VOCAB ONLY
One of the external
bristles on annelids ______________
Seta (Setae)
A pair of nerve clusters
that serve as a brain
at the anterior end
Cerebral ganglia
of some invertebrates _________________
A thickened section around
clitellum
an earthworm’s body that ______________
produces mucous for reproduction
In a flatworm, a cell that collects nitrogen waste
and excess body water for the excretory system
and excretes it through the skin ______________
Flame cell
An organism that produces both male and female
gametes (sperm & eggs) _________________
hermaphrodite
An infolding of the intestinal wall of an
earthworm that increases surface area
to absorb more nutrients ________________
typhlosole
Fleshy flap of skin that overhangs the mouth
of an earthworm and senses light/dark
________________
prostomium
A NON-CELLULAR LAYER in parasitic
round worms that protects them from the
host’s digestive and immune system
cuticle
(also seen in earthworms)_________________
A structure in a female or hermaphrodite
Seminal receptacle
that receives sperm ________________
A continuous sheet of FUSED CELLS that covers
the external surface of a fluke or tapeworm &
protects the worm from the host’s digestive and
immune system __________________
tegument
Tubule through which some invertebrates
(like segmented and round worms) eliminate
nitrogen waste _________________
nephridia
Dividing walls that separate the coelom into
compartments in an earthworm
________________
septa
Type of circulatory system in which
blood is contained in
vessels______________
closed
Type of development in which young start as
an immature larva and must undergo
metamorphosis to become adults
indirect
_______________
Type of reproduction in which offspring are
produced by combining genetic material
from 2 parents ________________
sexual
Muscular part that pulls food into the digestive
system______________
pharynx
5 pair of muscular tubes which connect the
dorsal and ventral blood vessels and force blood
Aortic arches
through the circulatory system ________________
A knob shaped organ bearing hooks and suckers
that lies at the anterior end of a tapeworm
________________
scolex
One of the many body segments of a
tapeworm containing reproductive organs
proglottid
______________
The structure that stores soil waiting to be
crop
digested in earthworms _________________
A muscular region in the digestive tract of
earthworms that crushes and grinds food
gizzard
________________
The host in which the adults of a parasitic
worm live and reproduce ______________
Primary host
A disease characterized by muscle pain and
stiffness caused by a parasitic blood fluke of
schistosomiasis
the genus Schistosoma _________________
A carbohydrate found in the cocoons of
earthworms and the exoskeletons of some
chitin
arthropods ________________
Structure that stores sperm made to give
away to other worms ______________
Seminal vesicles
Type of coelom seen in earthworms in which
the body cavity is lined on both sides by
mesoderm _________________
Eucoelom or “true” coelom
Flatworm phylum that includes Planaria,
Platyhelminthes
flukes, and tapeworms ________________
Ring around the body of an earthworm that
produces mucous for reproduction
clitellum
______________
Traction bristles on the ventral surface of an
earthworm _________________
setae
Round worm phylum that includes Ascaris,
pinworms, hookworms, and filarial
worms________________
Nematoda
Reproductive organ that produces eggs
______________
ovary
A disease caused by a parasitic round worm
of the genus Trichinella; characterized by
muscle pain and stiffness
trichinosis
_________________
Opening for digestive waste in an earthworm
________________
anus
Reproductive organ that produces sperm
testes
______________
ganglia
A cluster of nerve cells_______________
Segmented worm phylum which includes
earthworms and leeches ________________
Annelida
Development in which offspring hatch or are
born with a similar shape as the adult form
and must just grow bigger ______________
direct
Type of symmetry in which
dividing the animal produces
bilateral
2 mirror images _______________
Ability to regrow lost body parts
regeneration
________________
Type of reproduction in which offspring are
produced from the genetic material of only
asexual
one parent______________
Body system that removes nitrogen waste and
maintains the balance of ions/water
excretory
_______________
Digestive organ in an earthworm where
intestine
nutrients are absorbed ________________
Shared one opening digestive/circulatory
space seen in Planaria
Gastrovascular
______________cavity
Joining of sperm and egg outside the
mother’s body_______________
External fertilization
Maintaining the balance of water and ions in
the body _______________
osmoregulation
Concentration of a “brain” and sensory
organs at the anterior end of an
cephalization
animal______________
Outside body covering on an
animal_______________
integument
Body system that exchanges gases with the
environment________________
respiratory
Line that runs from the male genital pore to
the clitellum along which sperm
Sperm groove
travels______________
Type of coelom seen in flatworms with no
space around the internal
organs_______________
acoelom
Opening for sperm leaving an earthworm to
Male genital pore
be given away ______________
coelom
Space around body organs ______________
Organism with spiral determinate cleavage
whose blastopore becomes its mouth
________________
protostome
Oligochaeta
Class to which earthworms belong ______________
Organisms without a backboneinvertebrates
_______________
Kind of circulatory system in which
blood is NOT contained in vessels
open
and flows loose inside the coelom ____________
Type of coelom in which
there is NO space and mesoderm
Acoelom
fills the area between ectoderm ____________________
and endoderm
Type of coelom in which mesoderm
Is found lining the outside body wall
and surrounding the gut
__________________
eucoelom
Type of coelom in which mesoderm
lines the outside body wall but is
pseudocoelom
NOT found around the gut
____________________
Body system for removing
nitrogen waste
excretory
____________________
Body system for transporting
nutrients and oxygen around
circulatory
in body
____________________
Body system that exchanges
respiratory
gases with the environment __________________
Body system that maintains
the balance of water/ions
(osmoregulation)
excretory
__________________
Body system for receiving info
nervous
about the environment and responding ________________
Body system for obtaining
nutrients
____________________
digestive
Body system that produces
offspring
reproductive
__________________
Body system that moves the
organism or moves substances
inside the body
muscular
__________________
Body system that provides
skeletal
support and protection ______________________
Body system that makes hormones
endocrine
which control other body systems ________________
Body system that deals with
integumentary
what covers the animal
__________________
Type of cleavage pattern in which
cells stack on top of each other and
Indeterminate
decide later on what they will become ______________
radial cleavage
A skeleton formed by putting fluid
into the coelom space
__________________
Hydrostatic
skeleton
Cleavage pattern in which cells
twist as they divide and decide
Determinate
early what they will become ____________________
spiral cleavage
Waste produced in body cells by the
breakdown of proteins and nucleic
acids and handled by the excretory system
Nitrogen waste
_______________________________
Label the directions
DORSAL
A.__________________
POSTERIOR
D_______________
ANTERIOR
__________________B
VENTRAL
___________________
C
Animation from: http://bestanimations.com
NAME THE TYPE OF COELOM
Pseudocoelom
Images from:
Eucoelom
http://www.lander.edu/RSFOX/310images/310bilatImage.html
Acoelom
NAME THE TYPE OF SYMMETRY
Radial
Bilateral
Images from:
http://www.uic.edu/classes/bios/bios100/labs/radial.jpg
http://www.uic.edu/classes/bios/bios100/labs/bilateral.jpg
http://vilenski.org/science/safari/animals/other/classify_animals.html
Asymmetry