Sponges
Pore animals that bring water and food and create waste
Live in water
They attach permanently to the surface as an adult
As an embryo they swim around
Have a skeleton made of spicules and spongin
Filter feeders
Invertebrates
Organisms that have no backbone or skeleton
Parts of a sponge:
Pores
Central cavity
Collar cells
How do sponges pull water with the help of collar cells
Water travels through central cavity were food and waste are absorbed then it exits out of the top of the large holes
Jellyfish
All have
tentacles
Stinging cells
1cavity -a gastrovascular cavity
Organisms in this group include:
Jellyfish
Corals
Anemones
Hydras
Cnidarians have
A round body shaped-radial symmetry
Jellyfish facts
Have a hydrostatic skeleton
Their mouths are surrounded by tentacles
Have a few nerves and muscles
Have a nematocysts
Poison is forced out to paralyze or kill prey
Tentacles move the food into the mouth
Tentacles are not used to swim. Jellyfish drift or use a simple jet prolusion to move
Echinoderm
All have: Spiny skin Tube feet Marine and breathe with skin gills Can regenerate extensively Go through a metamorphosis and a swimming larval stage
Mukluks
Have a soft body usually protected by a hard shell which is produced by an mantle
Some have no shells such as a squid and a octopus
Are an important to the food chain and are important economically
Have a radula
Have an muscular foot used for locomotion
They have tree groups:
1.gastropods
There are 3 groups of mukluks
Gastropods
Cephalopods
Bivalves
Arthropods’ characteristics
Have :
jointed appendages
A exoskeleton
Segmented bodies
5 groups of mouth parts
Crustaceans,arachnids,centipedes,millipedes,and insects
Crustaceans
Examples are shrimp,crabs,and,lobsters
They have 5 pairs of legs, with 2 antennae, and specialized legs for pinching ,spearing ,hammering,or cutting