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Blume Ch. 12.3 Reinforcement
Question | Answer |
---|---|
Worms are divided into two types, what are they? | Planarians and Flukes |
All worms are vertebrates or invertebrates? | invertebrates |
What type of symmetry do worms have? | Bilateral |
True or false- Flukes and Tapeworms are types of parasite flatworms? | True |
Parasites depend on a host organism to meet their needs. Planarians however, are __________ flatworms. | Free-living |
Roundworms were the first group of animals to evolve a digestive system with a ________ and a _______. | Mouth and Anus |
True or False- Roundworms that attack dogs are not parasites? | False, they are parasites |
How does a tapeworm eat? | It absorbs food that is digested by the host from its host's intestine |
What is the most widespread human disease caused by flukes? | Schistosomiasis |
How are roundworms helpful to humans? | they help fight insects,kills ticks that cause lyme disease,help provide healthy soil, and they help in cycling nutrients such as nitrogen. |
Describe the life cycle of a fluke | The eggs are fertilized in the female, she lays the fertilized eggs in a host. The eggs leave in the host's waste, often infect snails after losing.Deposited in water, like humans, can be infected while wading or swimming. |