Download chapt07 discussion

Document related concepts

Cephalopod size wikipedia , lookup

Marine biology wikipedia , lookup

Marine life wikipedia , lookup

Invertebrate wikipedia , lookup

Transcript
Invertebrates
• Porifera: The Sponges
• Structural support:
– Spongin is a support protein
– Spicules are support structures made of silica
or calcium carbonate.
– These spicules have a variety of shapes from
simple rods to star-shaped
Photograph by Dr. Donald Keith