Porifera
What is the hollow space called in a sponge?
Central cavity
Name some of the animals included in the cnidarian group.
Jellyfish, hydras, anemones and corals
What are porifera bodies covered with?
Pores
What does sessile mean?
Fixed to one place and that doesn't move
What is the large hole used to release water and waste substances called?
What are the two basic body types of cnidarians?
Polyp and medusa
The porifera internal skeleton is made of rigid spines called what?
Spicules
What are the cells on the sponge's external layer called?
Pinacocytes
What type of reproduction do cnidarians normally use?
Medusae mostly sexually and polyps normally asexually through budding process
What are polyps internal skeletons formed of?
How do sponges get food from water? What is the process called?
Filtration
What are the cells that form the pores which let water flow into the sponge called?
Porocytes
How do cnidarians interact?
Using tentacles that have cnidoblasts
What are polyps external skeletons made of?
Minerals
What are the cells that cover the inner cavity and create a stream of water called? They also filter food.
Choanocytes
What do we call it when some species have both polyp and medusa stages in their life? Consequently with both sexual and asexual phases too.
Alternation of generations
What type of skeleton do medusae have?
Hydrostatic skeleton
What is the definition of fragmentation?
Part of the organism breaks apart from its parent and grows into a separate genetically identical individual