SBI 3U DIVERSITY OF LIVING THINGS STRAND
THE ANIMAL KINGDOM
Phylum Porifera
1. What is one type of living thing in this phylum?
2. How many species (approx.) are in this phylum?
3. What is the difference between aquatic and marine?
4. Sponges are sessile. What does that mean?
5. Describe the body plan of a typical poriferan.
6. What are the functions of oscula/osculum?
7. List the three types of specialized cells in sponges with their functions.
8. What type of skeleton do sponges have?
9. What is a spicule?
10. Sponges are hermaphrodites. What does that mean?
11. By what main methods do sponges reproduce?
Phylum Cnidaria
1. List the three classes of cnidarians and an example for each class.
2. How many species (approx.) are in this phylum?
3. What type of symmetry do cnidarians show?
4. How many layers of cells do cnidarians have?
5. What is mesoglea?
6. What is the name for the stinging structures of cnidarians?
7. Do cnidarians exhibit cephalization? Explain.
8. What roles does the gastrovascular cavity have in cnidarians?
9. What are the names of the two life cycle stages of cnidarians?
Phylum Platyhelminthes
1. What are members of this phylum also known as?
2. List the three classes of platyhelminthes and an example from each class.
3. What is a coelom?
4. Are members of this phylum coelomates, pseudocoelomates, or acoelomates?
5. Which two classes are primarily parasitic?
Phylum Nematoda
1. What are members of this phylum also known as?
2. How do most nematodes make their living?
3. What type of skeleton do nematodes possess?
4. What type of symmetry do nematodes show?
5. Are members of this phylum coelomates, pseudocoelomates, or acoelomates?
6. How many species (approx.) are in this phylum?
Phylum Annelida
1. What are members of this phylum also known as?
2. List the three classes of annelids and an example from each class.
3. Are members of this phylum coelomates, pseudocoelomates, or acoelomates?
4. How many species (approx.) are in this phylum?
5. What does hermaphrodite mean again?
6. Why do annelids need a circulatory system rather than (like platyhelminthes or
nematodes) relying on diffusion for gas exchange?
7. Why are setae important to annelids?
SBI 3U DIVERSITY OF LIVING THINGS STRAND
Phylum Molllusca
1. How many species (approx.) are in this phylum?
2. Is it safe to say that there is a huge size variation in this phylum?
3. What three main components are part of all mollusc body plans?
4. List the three classes of molluscs and an example from each class.
5. What type of symmetry do molluscs show?
6. What type of skeleton do molluscs have?
7. Comment on the degree of cephalization shown in molluscs.
8. How many cell layers are in members of this phylum?
Phylum Echinodermata
1. How many species (approx.) are in this phylum?
2. List the three classes of echinoderms and an example from each class.
3. What type of symmetry do members of this phylum exhibit as larvae? as adults?
4. What type of skeleton do members of this phylum have?
5. Comment on the degree of cephalization shown in molluscs.
6. What reproduction method is used in this phylum?
7. Are members of this phylum coelomates, pseudocoelomates, or acoelomates?
8. How many cell layers do echinoderms possess?
Phylum Arthropoda
1. How many species (approx.) are in this phylum?
2. Describe the general body plan of an arthropod.
3. What type of skeleton do members of this phylum exhibit?
4. What molecule makes up the skeleton of arthropods?
5. What is moulting?
6. What is a hemocoel?
7. What is the main difference between a closed and an open circulatory system?
8. List the five classes of arthropods with as many examples as you can from each class.
9. What is a major difference between millipedes and centipedes?
Phylum Chordata
1. Describe 6 major characteristics all members of this phylum will possess at some time in
development.
2. Are the majority of chordates invertebrates or vertebrates?
3. Are the majority of animals invertebrates or vertebrates?
4. List the five classes of chordates with two unique characteristics for each class (i.e.,
either a structural adaptation or behaviour).
5. What is the difference between endotherms and ectotherms?
6. What are the three main groups of mammals? What ‘type’ of mammal is a human?
7. What type of skeleton do chordates possess?
8. What type of symmetry do chordates possess?
9. How many cell layers do chordates possess?
10. Are members of this phylum coelomates, pseudocoelomates, or acoelomates?