Review for test
Sponge - one type of animal that filters the water it lives in to get food.
Example - Venus-Flower Basket,
- reproduce asexually
- gets food from environment around it.
- between inner and outer layer there is a jelly-like layer
- grow at almost any depth
- grow on hard surfaces
- filters water to get its food
- 5000 known species
-no real digestive system
Adaptation - body is a network of tiny pores and canals that allow water to filter through to obtain food because they don’t move.
Segmented Worms - made up of different segments
- five tubes act as a heart
- has a brain
- eats soil
Adaptation - is able to eat through the ground
What is the major difference between an earthworm and other worms?
Body is made up of segments
Flatworm - flatworms have a flat body
- it has a flattened body
- live in water
- very small
- reproduce with sex organs
- eyes on top of head
Adaptation - regenerates body parts
What characteristics do all flatworms share?
Roundworm - round and tubelike
-tube like body
- really small
- reproduces with sex organs
Adaptation - has a nervous systemn
How do roundworms and flatworms differ?
Round worms Have a digestive system