Presentation is loading. Please wait.

Presentation is loading. Please wait.

Echinoderms. Spiny skin Spiny skin Radial symmetry Radial symmetry Water vascular system Water vascular system.

Similar presentations


Presentation on theme: "Echinoderms. Spiny skin Spiny skin Radial symmetry Radial symmetry Water vascular system Water vascular system."— Presentation transcript:

1 Echinoderms

2 Spiny skin Spiny skin Radial symmetry Radial symmetry Water vascular system Water vascular system

3 Form and Function Water vascular- respiration, circulation, movement. Water vascular- respiration, circulation, movement. Madreporite- connects the ring canal to the outside. Madreporite- connects the ring canal to the outside.

4

5 Tube feet- movement. Tube feet- movement. Feeding- sea stars push out stomach and enzymes break down shells. Feeding- sea stars push out stomach and enzymes break down shells. Excretion- cellular through tube feet(ammonia), solid through anus. Excretion- cellular through tube feet(ammonia), solid through anus. External fert. External fert.

6 Groups of Echinoderms

7 Sea Urchins and Sand Dollars Large solid plates Large solid plates Most eat algae Most eat algae

8

9

10 Brittle Stars Found on coral reefs Found on coral reefs Can shed an arm to escape Can shed an arm to escape Filter feeders Filter feeders

11

12 Sea Cucumbers Moving pickles Moving pickles Detritus feeders Detritus feeders

13 Slide 13

14

15

16 Sea Stars Most are carnivores Most are carnivores Eat bivalves Eat bivalves Can repair themselves Can repair themselves

17

18

19 Sea Lilies and Feather Stars Filter feeders Filter feeders Live in the tropics Live in the tropics

20 Feather Star (Note the depth)


Download ppt "Echinoderms. Spiny skin Spiny skin Radial symmetry Radial symmetry Water vascular system Water vascular system."

Similar presentations


Ads by Google