Classification of animals 2.0

• Biologie
• Middelbare school
• havo
• Leerjaar 1

Classification of Animals

for class 1tto

checking 3.1-3.6

by S. Lemaire

What you learned about
Animal Phyla

We will show you: real specimens!

You decide to which Phylum each specimen belongs. And why! Success!

1. This organism belongs to the Phylum:

What characteristics of this organism were indications for the correct answer?

1. Phylum: Sponges

Visible characeristics:

• no symmetry
• body has many holes (pores) for in-/outflow of water
• no mouth, no organs
• traps + eats plankton
• aquatic.

2. This organism belongs to the Phylum:

What characteristics of this organism were indications for the correct answer?

2. Phylum: Cnidarians

Visible characteristics:

• An exoskeleton of Calcium, a coral
• the coral is built by Cnidarians
• Cnidarians show radial symmetry
• aquatic

3. This organism belongs to the Phylum:

What characteristics of this organism were indications for the correct answer?

3. Phylum: Molluscs

Visible characteristics:

• some have an external skeleton: a shell
• soft bodies
• many are aquatic
• and are filterfeeders. 
  

 => Bi-valves

4. This organism belongs to the Phylum:

What characteristics of this organism were indications for the correct answer?

4. Phylum: Molluscs

Visible characteristics:

• an internal skeleton: a calcium plate
• soft streamlined body
• with tentacles attached to their head
• and hunt for prey
• by squirting ink.
  => octopus/squid/cuttlefish

5. This organism belongs to the Phylum:

What characteristics of this organism were indications for the correct answer?

5. Phylum: Molluscs

Visible characteristics:

• an exoskeleton (a shell)
• soft streamlined body
• with tentacles attached to their head
• and hunt for prey.

7. This organism belongs to the Phylum:

What characteristics of this organism were indications for the correct answer?

6. Phylum: Echinoderms

• ‘spiny skinned’
• aquatic
• radial symmetry (5 equal parts)
  
• endoskeleton
• with a mouth located in the center of the body.

=> sea star

7. This organism belongs to the Phylum:

What characteristics of this organism were indications for the correct answer?

7. Phylum: Echinoderms

• ‘spiny skinned’
  
• aquatic
  
• radial symmetry (5 equal parts)
  
• endoskeleton
  
• with a mouth located in the center of the body
  
  => sea urchin (zee-egel)

The end

Well done! 

Classification isn't always simple!

Are there any questions?

Phylum: Molluscs

• These molluscs are different from the others in many ways. The mouth of the animals in this group is at the base of the foot. The foot however has long tentacles that are used to catch prey.
• They are adapted to being fast, streamlined predators.
• They all have soft bodies, and can change the colour of their skin. They can also squirt ink from ink sacs that are located between the gills to escape from their enemies.

Phylum: Echinoderms

• They do have a support system of stiff plates underneath their skin. This endoskeleton gives them strength and support.
• They move around on tube like feet. These tube feet can also be used to hunt down prey.
• When a sea star finds an oyster, its favorite food, its tube feet bring the opening between the shells of the oyster to its mouth.
• To eat the oyster, a starfish will turn its stomach inside out and stick it between the shells, clam. Then it starts to break down the soft tissue inside the shells!

Phylum: Molluscs

• These molluscs are different from the others in many ways. The mouth of the animals in this group is at the base of the foot. The foot however has long tentacles that are used to catch prey.
• They are adapted to being fast, streamlined predators.
• They all have soft bodies, and can change the colour of their skin. They can also squirt ink from ink sacs that are located between the gills to escape from their enemies.

Phylum: Echinoderms

• They do have a support systems of stiff plates underneath their skin. This endoskeleton gives them strength and support.
• They move around on tube like feet. These tube feet can also be used to hunt down prey.
• These sea urchins feed primarily on algae but also eat slow-moving or sessile animals.