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Szollo:) ❀

Blume Ch 12.3 Reinforcement

Worms are divided into two types, ____________ and _____________. flatworms and roundworms
All worms are _____________ with three tissue layers. In addition, all worms have ____________ symmetry. Invertebrates and Bilateral
_____________ and _____________ are types of parasite flatworms. tapeworms and flukes
Parasites depend on a host organism to meed their needs. Planaraians however, are ______________________ flatworms. free-living
Roundworms were the first group of animals to evolve a digestive system with a ______________ and an ________. Mouth and Anus
Some like the ___________________ that attack dogs, are parasites. Most, however, are free-living. heart worms
Roundworms comprise a group of worms known as _________________. nematodes
How does a tapeworm eat? Tapeworms attach themselves in a host's intestine and absorbe food the host has digested
Describe the life cycle of a fluke. The eggs are fertilized in the female, and she lays the fertilized eggs in a host. The egga leave in the host's waste and often infect snails anfter losing deposited in water. other hosts like humans, cn be infected while swimming.
What is the most widespread human disease caused by flukes? schistosomiasis
List three ways roundworms are helpful to humans. Roundworms help fight insects, may be used to kill ticks that cause Lyme disease, and help provide healthy soil.
Created by: szollo:)