Phylum Porifera
What two things are sponges composed of?
1. Spongin
2. Spicules
Cnidocil
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?
multicellularity
Asymmetric body symmetry
Stinging cells launch a venomous harpoon called a...
nematocyst
Medusa
In sponges, water flows out through...
the osculum
Which tissue layer does the phylum Cnidaria NOT have?
mesoderm
No true tissue
______________ cells are responsible for contracting the tentacles to move food to the mouth.
epitheliomuscular
What is are the two types of tissues located in phylum Cnidaria?
ectoderm (epidermis) and endoderm (gastrodermis)
Sponges are 1. ___________ feeders who use 2. __________ cells to capture food.
1. Filter
2. Choanocyte
What are the three polyp groups for Cnidaria?
hydra, coral, anemone
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
What is the name for when the polyp form of a jellyfish species releases multiple ephyra into the water for reproduction?
Strobilation
Sponge cell responsible for digestion and material transport
amoebocytes
These cells form the outer covering of sponges.
Pinacocytes
Rank the three sponge body plans in order from simplest to most complex.
Which structure secretes digestive enzymes for Cnidarians?
Gastrodermis
Where does digestion take place in Cnidaria? Sponges?
Gastrovascular Cavity, Amoebocytes
The 1.______________ of a choanocyte move water, and the 2. ________________ traps food.
1. flagella
2. collar
What are the four environmental stimuli that a Cnidarian can respond to?
1. light
2. chemicals
3. gravity
4. touch