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CalieBell
Blume Ch. 12.3 Reinforcment
Question | Answer |
---|---|
What are the two types of worms? | Roundworms and flatworms. |
Are worms vertebrates or invertebrates? | Invertebrates |
What kind of symmetry do worms have? | Bilateral |
How many tissue layers do worms have? | Three |
What type of worm was the first to evolve bilateral symmetry? | Flatworms |
What are two types of parasitic flatworms? | Tapeworms and flukes |
What kind of organisms are planarians? | Free-living |
Roundworms were the first to evolve what? | A digestive system with a mouth and anus |
What kind of round worm attacks dogs? | Heartworms |
What group of worms are roundworms known as? | Nematodes |
How does a tapeworm eat? | It absorbs food that is digested by the host |
What is the most widespread disease caused by flukes? | Schistosomiasis |
What ways do roundworms help humans? | They eat insects, kill ticks that cause Lyme disease, and provide nutrients for the soil |
What is the life cycle of a fluke? | The male deposits sperm in a female, the female lays eggs, the eggs leave the host through urine, if they're in water they infect snails,they lave the snail, and burrow into a new host. |