Presentation is loading. Please wait.

Presentation is loading. Please wait.

Echino = “spiny” Dermis = “skin”. Some different echinoderms.

Similar presentations


Presentation on theme: "Echino = “spiny” Dermis = “skin”. Some different echinoderms."— Presentation transcript:

1 Echino = “spiny” Dermis = “skin”

2 Some different echinoderms

3 Unifying Characteristics Spiny Skin Internal Skeleton – “endoskeleton” Water vascular system Muscular tube feet (suction cup feet) Pentaradia Symmetry 5 rays of symmetry

4 Water Vascular System Madreporite - sieve-like opening to the water vascular system

5 Water Vascular System Functions: Respiration Ring & Radial Canals Tube Feet Circulation Ring & Radial Canals Movement Tube Feet

6 Each tube foot is basically a suction cup, muscles pull up the centre of the cup causing suction Many feet working together can exert huge force, allowing “walking” and attacking

7 Groups of Echinoderms Sea Urchins and Sand Dollars Grazers and Detrivores Solid plates protect internal organs Brittle Stars Filter feeders and Detrivores Slender/Flexible arms – detach and distract Sea Cucumbers Detrivores Eviscerate themselves as defence! Sea Stars Predatory Regenerative if dismembered! Sea Lilies and Feather Stars Filter Feeders Feather dusters of the sea

8 Sea Urchins and Sand Dollars Grazers and Detrivores Solid plates protect internal organs

9 Brittle Stars Filter feeders and Detrivores Slender/Flexible arms – detach and distract

10 Sea Cucumbers Detrivores Eviscerate themselves as defence!

11 Sea Stars Predatory Regenerate if dismembered!

12 Sea Lilies and Feather Stars Filter Feeders Feather dusters of the sea


Download ppt "Echino = “spiny” Dermis = “skin”. Some different echinoderms."

Similar presentations


Ads by Google