Porifera
Sponges are composed of Spongin, which is a flexible, fibrous protein. What other structure makes up the body of sponges?
Spicules
Sponges exchange gases through this simple process.
Diffusion
All organisms in the phylum Cnidaria have this which is a defense mechanism/or used to capture prey.
Cnidocyte
In sponges water flows in through...
Ostia
What characteristic from our cladogram do both Porifera and Cnidaria have in common?
multicellular
Asymmetric body symmetry
Stinging cells launch a venomous harpoon called a...
nematocyst
Medusa
In sponges, water flows out through...
the osculum
This type of symmetry describes organisms that show no consistent body pattern at all.
Asymmetry
Jellyfish use this pulsing motion for locomotion.
Jet propulsion
The two main cnidarian body forms.
Polyp and Medusa
What is are the two types of tissues located in phylum Cnidaria?
ectoderm (epidermis) and endoderm (gastrodermis)
Sponges are 1. ___________ feeders who use
1. Filter
This symmetry divides an organism into mirror-image left and right halves.
bilateral
In sponges life cycle 1._________ is free-swimming but 2._________ are sessile (immobile)
1. Larvae (planula)
2. Adults
Food enters through the 1. ___________ and exits through the 2. _____________
1. Mouth
2. Mouth
The free-swimming, ciliated stage in sponge reproduction
Larva
Jellyfish use this pulsing motion for locomotion.
This symmetry radiates from a central point, common in cnidarians.
radial
The gelatinous layer between the epidermis and gastrodermis.
Mesoglea
Which structure secretes digestive enzymes for Cnidarians?
Gastrodermis
What is two environmental stimuli that a Cnidarian can respond to?
1. light
2. chemicals
3. gravity
4. touch
This term describes an animal attached to a surface for its entire adult life.
sessile
Sea stars eventually exhibit this five-part body plan.