Invertebrate Groups

1. Sponges

Sponges

• Sponges pump water through the hole at the top and filter tiny (microscopic) particles of food that are floating in the water

• You can blend them up and they will re-assemble as they were before!

2. Coelenterates

http://www.youtube.com/watch?v=Dh7azi3fFQY

Many have stinging tentacles-includes jellyfish and coral

Brain Coral

3. Flatworms

• FLAT animals. Not what we consider ‘WORMS’

• http://www.youtube.com/watch?v=gOs650f6c5M

4. Nematodes

THIS GROUP includes worms (roundworms, pinworms).

Some are parasitic (What is a parasite!?)

Don’t believe me!?http://www.youtube.com/watch?v=gOs650f6c5M

5. Molluscs

• Soft-bodied animals that are often protected by an outer shell

e.g. Snails, Oysters, Clams, Squid and Octopus

SMART OCTOPUS

CONE SNAIL

6. Annelids

• This group includes roundworms (the one you see often) and leeches!

The Largest Roundworm...

• http://www.youtube.com/watch?v=gOs650f6c5M

7. Arthropods

• This is a HUGE group that includes 80% of the earth’s animals!!

• All have jointed legs

8. Echinoderms

• This group includes STARFISH, urchins, sea cucumbers and sea horses!

EVER SEEN A SEA STAR EAT!?

Task

• Write a paragraph highlighting your knowledge of organisms using ALL of the words below...

ORGANISM, INVERTEBRATE, CLASSIFY, LIVING, VERTEBRATE, NON-LIVING, CHARACTERISTICS, EXAMPLE, COLD-BLOODED, WATER, LAND, BIRD, ARTHROPOD, HUMAN