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6. Although many flatworms are free living, most are...
- Parasites
- Pests
- Symbionts
7. Many parasitic flatworms devote most of their body to reproduction because they lack digestive tracks
8. They lack specialised organs for transporting oxygen around the body so each cell must be near to
- The head
- The surface
- The heart
9. Flatworms have a mouth but no anus
10. Some free-living flat worms exhibit what?
- Cephalisation
- Emotions
- Repeated patterns
- Deformities
11. They can causes serious human diseases such as
- Malaria
- Schistosomiasis
- TB
12. Flat worms move in a gliding motion, they're carried by
- Bands of flagella on their dorsal surface
- Bands of cilia on their dorsal surface
- Bands of cilia on their ventral surface
- Bands of flagella on their ventral surface
13. Which of these is not an example of a parasitic flatworm?
- Flukes
- Nematode worm
- Tapeworm