Invertebrates live in two kinds of environments. What are they?
Aquatic and terrestrial
An invertebrate's environment where it lives is also known as its _____________.
habitat
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.
True or False: All invertebrates are motile (moving).
False. Some are also sessile (stationary)
Most invertebrates have an external skeleton called an ____________.
exoskeleton
These are the simplest invertebrate animals. They have no organs (2 types).
Porifera and Cnidaria
The invertebrate group _________ consists of sponges.
Porifera
How do sponges feed?
They are filter feeders. They feed on oxygen and small particles of nutrients suspended in water.
Water enters a sponge through its ______________ and deposits nutrients.
central cavity
The body wall of a sponge is full of tiny holes called ___________.
pores
What group of invertebrates is this?
Porifera (it's a sponge)
What are the three groups of cnidaria?
jellyfish, seas anemone, and corals
What group of invertebrates is this?
cnidaria- it is coral
