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* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Means = _______________________ Sea Stars Sea cucumbers Sea urchins Sand dollars 1. Body Structure A. ___________________ (true coelom w/____________) B. Similarities to _______________ 1. ___________________Embryonic development (mouth develops ____________)* *(NOTE: all animals covered before echinos. are protostomes i.e. mouth develops first) 2. ______________________ a. thin layer of ______________ on top b. made of ______________(hard bony plates) & _____________________ c. f(x) = support, ________________ C. Water vascular system Label : madreporite, ampullae, tube foot, ring canal, stone canal 2. 3. 4. 5. 1. Series of connected _______ filled with ______ 2. Water _______ pattern: _____________ (water intake) ►____________ ►_____________ ►_______________ ►____________ ►____________ & ____________ Level of Organization – _________________ Symmetry Adults -_____________ (Sea stars mostly______________) Free swimming Larvae – ________________ Habitat - ________________ Feeding a. __________________ digestive tract (most complete so far ……..) b. Two __________ + pyloric caecum c. Feeding Patterns i. ________________– sea stars ii. _______________– sea cucumbers iii. ______________– sea urchins iv._______________– brittle stars 1 d. Hydraulic feeding : sea star eats bivalve o __________ inserted between _________ o Bivalve ______________ muscles tire, it opens o Sea star everts __________ into ___________ o _____________released to __________ prey o ______________ absorbs dissolved ___________ o Sea star retracts ____________ ★ No _________, ___________, _________, _____________ Mouth & Tube feet = _________ side Anus & madreporite = _________ side 6. Respiration ★ diffusion across skin gills, + water vascular system 7. Circulatory System - ___________ 8. Excretion __________+ diffusion across _________________ 9. Response No________ , no _______________ Central __________________ around ___________ Nerve branches in each ___________ 10. Locomotion – _____________ Process = ★ water into ________________, pushes tube feet down ★ water out of ampullae pulls ________________ 11. Reproduction Most ______________ Fertilization ___________________ Regeneration –_____________ & part of ____________ disk makes a new sea star (A problem for__________________ !) 12. Ecological Roles _______________ _______________ – crown of thorns sea star ________ – urchin eggs (sushi), sea cucumbers _________________ research – _________________ studies – __________ studies (sea star eggs are very large) 1. 2. 3. 4. Class__________________– e.g. ______________ stars a. Arms are ______________ & sharply set off from____________________ b. Move __________________ (may throw down _____________&_______________) c. _______________ & __________________ Class ____________________ – e.g. sea urchin, sand dollar, sea biscuit 3. No _______________ 4. Cenral “shell” is _________________ = ________________ 5. Sharp (or stone) ______________________ Class _________________ e.g. sea cucumbers a. Elongated ________________________ body b. Reduced ________________________ c. Tube feet modified into _____________________ for______________, _______________ traps food, _________________ feeders Class___________________________ e.g. sea stars a. Mostly _____________________ b. Eat ______________________________ 2