SPONGES!

The Facts …

•Body symmetry- Asymmetrical

•Reproduction- Asexually and Sexually

•Movement- stationary

•Food- snags food from water which passes through them

Magic Sponges?If you were to take a living sponge and were

to SMASH it through a screen, break it apart…what happens to the cells? Remember – EACH CELL contains all of the

organelles needed to create a living organism: nucleus, mitochondria, vacuole, cell membrane, ribosomes, ER, Chromosomes, nuclear membrane, lysosomes, golgi bodies

WRITE YOUR RESPONSE ON YOUR PAPER!

Sponges are

Magic!

Cell Aggregates!

After destroying the structure of the sponge

Several hours later

How do Poriferans reproduce?

http://www.youtube.com/watch?v=KOFFzXNYJG0&feature=related

Phylum Porifera

•Porifera in Greek means “having pores”

•The body of a sponge is covered in pores… These allow the sponges to take in FOOD such as plankton as well as OXYGEN.

•Collar cells aka Choanocytes

•Sponges don’t have bones, yet they are still hard. Sponges have tiny SPICULES that act as skeletons.

So how does a sponge work?Water goes OUT

through the Osculum

Water goes IN through the-

pores

Choaocyte

or

‘collar cell’

Nemo is in Danger!!

The coral reef is in danger! Although some parts of the coral reef is as hard as a rock, the ecosystem is very

delicate. If things like scuba divers or boat anchors touch the coral it can damage to the reef and destroy

many animals’ niches.