Worms
Flatworms have this kind of symmetry
bilateral
A jellyfish has this many layers of tissue
2
No invertebrate has this
backbone
a nerve cell
neuron
Corals that build coral reefs
hard corals
The structures in the earthworm which collect wastes
excretory tubules
This animal is in the same phylum as the jellyfish
coral
A collection of nervous tissue, called a "simple brain" in some organisms
ganglion
A collection of nerve cells wrapped in a protective covering
nerve
These can grow as long as 3 meters (9.8 feet)
earthworm
This worm needs hooks and suckers on its head to hold onto its host's digestive tract
tapeworm
The outer tissue layer in a jellyfish
ectoderm
The characteristic that gives the sponge phylum its name
pores
This structure in an earthworm controls the blood pressure
aortic arches
The thinness of this allows its cells to exchange gases directly with the environment
planarian
The phylum which includes flatworms
Platyhelminthes
a stinging cell of a hydra or jellyfish
nematocyst
Protein component of some sponge skeletons
spongin
a type of skeleton similar to a water balloon
hydrostatic
The chamber in an earthworm where mechanical digestion primarily takes place
gizzard
This characteristic distinguishes phylum Annelida from the other worm phyla
AND
Although invertebrates do not have backbones, they do have this to help support their bodies
segmented body
skeleton
The digestive chamber of a jellyfish
AND
Where absorption takes place in an earthworm
gastrovascular cavity
intestine
The planarian uses this structure to remove wastes from its body
AND
Temporary storage chamber for food in an earthworm
flame cells and excretory pores
crop
The thick muscular walls in an earthworm which help to pull food into the mouth
AND
This type of worm is a type of roundworm and is not beneficial to cats, dogs, and farm animals
pharyx
tapeworm
The brown tube sponge belongs to this phylum
AND
This animal does not move by beating its tentacles - it usually floats
Porifera
Jellyfish