Which Cnidaria stage does the jellyfish represent?
medusa stage
The invertebrate group _________ consists of sponges.
Porifera
Cnidaria have one opening surrounded by _________ with stinging cells.
tentacles
What is this? What group of invertebrates is it in?
Sea anemone? Cnidaria
These are the simplest invertebrate animals. They have no organs (2 types).
Porifera and Cnidaria
Water enters a sponge through its ______________ and deposits nutrients.
central cavity
True or False: All invertebrates are motile (moving).
False. Some are also sessile (stationary)
An invertebrate's environment where it lives is also known as its _____________.
habitat
Where do corals and sea anemones live?
Attached to the ocean floor
How do cnidarians feed?
They are carnivorous predators
True or False: Invertebrates do not range in size. They are all very small.
FALSE- Vertebrates have a wide range of sizes. From microscopic water fleas to the GIANT squid.
What are the three groups of cnidaria?
jellyfish, seas anemone, and corals
What group of invertebrates is this?
Porifera (it's a sponge)
Cnidaria have a __________ __________ like a stomach, connected to their mouth.
gastrovascular cavity
What are cnidoblasts?
stinging cells that give this group its name.
How do sponges feed?
They are filter feeders. They feed on oxygen and small particles of nutrients suspended in water.
Most invertebrates have an external skeleton called an ____________.
exoskeleton
The body wall of a sponge is full of tiny holes called ___________.
pores
Invertebrates live in two kinds of environments. What are they?
Aquatic and terrestrial
What group of invertebrates is this?
cnidaria- it is coral