General
What thing does no invertebrate have?
A backbone.
What is the main example of porifera?
The sponges
What are the main examples of cnidarian animals?
Polyps and jellyfish
"Worm" is a word that we use to refer to, how many types of invertebrate animals?
3
All the molluscs live in the sea.
True or false?
False.
Some of them are terrestrial, for example snails.
All invertebrates have an exoskeleton.
true or false?
False.
Some invertebrates do not have a skeleton.
What type of symmetry do porifera have?
Asymmetry
What type of symmetry do cnidarians have?
Radial symmetry
Some annelids are parasites.
True or false?
True.
For example the leeches.
What does "cephalopods" mean?
Cephalopods means legs on the head.
What type of symmetry do most invertebrates have?
Bilateral symmetry
The answer is: by diffusion.
What is the question?
How do porifera breathe?
What animal appears when a jellyfish egg hatches?
A polyp
The answer is: they are non-segmented cylindrical worms.
What is the question?
How are the nematodes?
Bivalves hunt and move around with the large tongue that they put out between their valves.
True or false?
False.
The have a foot, not a tongue. They feed by filtration.
What four characteristics do invertebrates have due to being animals?
As animals, they are eukaryotic, multicellular and heterotrophic with true tissues.
What is the name of the hole through which porifera expel the filtered water?
what is the name of the venemous cells of the cnidarians?
cnidocytes
what type of respiration do annelids have?
cutaneous respiration (through the skin).
What is the name of the special tongue of gasteropods?
Radula
How many main groups are included within invertebrates? name them.
8
Porifera, Cnidarians, Platyhelminthes, Nematodes, Annelids, Molluscs, Arthropods and Echinoderms.
What is the internal skeleton of porifera made of?
Of some spines called spicules and spongin fibers.
The answer is: they have alternating reproduction (sexual and asexual).
What is the question?
How do cnidarians reproduce?
In the annelids, what is the function of the clitelo?
It is where the eggs are formed and stored.
The answer is: It is divided into tentacles with suckers.
What is the question?
what is the foot of cephalopods like?