10. Planarian Facts:
• Smaller than length of fingernail
• Have eyespots and sensory lobes
• Live in water and on land
11. Planarian Facts:
• Smaller than length of fingernail
• Have eyespots and sensory lobes
• Live in water and on land
• Predators: eat other animals or parts of
animals
12. Planarian Facts:
• Smaller than length of fingernail
• Have eyespots and sensory lobes
• Live in water and on land
• Predators: eat other animals or parts of
animals
• Pharynx pulls food into gut to be digested
26. Flukes and Tapeworms
• All are parasites
– Parasite is an organism that feeds on a host.
• Host is usually not killed
27. Flukes and Tapeworms
• All are parasites
– Parasite is an organism that feeds on a host.
• Host is usually not killed
• Most live inside other animals
28. Flukes and Tapeworms
• All are parasites
– Parasite is an organism that feeds on a host.
• Host is usually not killed
• Most live inside other animals
• Eggs pass out of host with host’s waste
29. Flukes and Tapeworms
• All are parasites
– Parasite is an organism that feeds on a host.
• Host is usually not killed
• Most live inside other animals
• Eggs pass out of host with host’s waste
• If eggs end up in drinking water or on
food, they can be eaten by another host.
32. Body Parts
• Tiny heads, no eyespots or sensory lobes
• Special suckers and hooks for attaching to
host
33. Body Parts
• Tiny heads, no eyespots or sensory lobes
• Special suckers and hooks for attaching to
host
• Some have special skin so they are not
broken down by stomach acids
34. Body Parts
• Tiny heads, no eyespots or sensory lobes
• Special suckers and hooks for attaching to
host
• Some have special skin so they are not
broken down by stomach acids
• Tapeworms don’t have a gut
– Absorb nutrients right from intestines of host
68. Roundworms
• Round, when viewed in cross section
• Bilateral Symmetry
• Very small
– 1 rotten apple 100,000 roundworms!
69. Roundworms
• Round, when viewed in cross section
• Bilateral Symmetry
• Very small
– 1 rotten apple 100,000 roundworms!
• Primitive brain and nerve cords
70. Roundworms
• Round, when viewed in cross section
• Bilateral Symmetry
• Very small
– 1 rotten apple 100,000 roundworms!
• Primitive brain and nerve cords
• Most are parasites
– Humans pinworms and hookworms,
trichinosis