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Planaria (Cross-eyed worm). FLATWORMS (Platyhelminthes) INVERTEBRATES no backbone PROTOSTOMES blastopore becomes MOUTH.

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Presentation on theme: "Planaria (Cross-eyed worm). FLATWORMS (Platyhelminthes) INVERTEBRATES no backbone PROTOSTOMES blastopore becomes MOUTH."— Presentation transcript:

1 Planaria (Cross-eyed worm)

2 FLATWORMS (Platyhelminthes) INVERTEBRATES no backbone PROTOSTOMES blastopore becomes MOUTH

3 ACOELOMATES

4 RESPIRATORY Breathe through their skin

5 GASTROVASCULAR CAVITY (Combination Digestive & circulatory) Digestive cavity with 1 opening http://www.lima.ohio-state.edu/biology/biodiv/animal/planarlp.jpg

6

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8 EXCRETORY Water is always entering the bodies of animals that live in freshwater

9 FLAME CELLS Collect excess water and nitrogen waste Excreted through pores in skin Moving cilia look like little “flames ”

10 NERVOUS 2 CEREBRAL GANGLIA 2 NERVE CORDS

11 NERVOUS Eyespots: can sense light and dark Simple Learning: Normally moves AWAY from light Can be trained to stay in light Can also sense touch, water currents, & chemicals in water

12 REPRODUCTION SEXUAL- (hermaphrodites but trade with partner) ASEXUAL- can use regeneration to grow a new organism from parts

13 REGENERATION Ability to regrow lost body parts

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