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landon lessmann

Blume Ch 12.3 Reinforcement

QuestionAnswer
Worms are divided into what 2 types? Roundworms and Flatworms
All worms are _______ with with 3 tissue layers. Invertebrates
All worms are Invertebrates with with 3 tissue layers. In addition, all worms have _______ symmetry. Bilateral
_____worms were the first group of animal to evolve bilateral symmetry. Flat
_________ and _________ are types of parasite flatworms. Tapeworms and Flukes
Parasites depend on a host 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 an _____. Mouth and an Anus
Some roundworms, like ___________ that attack dogs, are parasites. Most, however, are free-living. Heartworms
Roundworms comprise a group of worms known as _______. Nematodes
How does a tapeworm eat? Tapeworms do not have a mouth or a digestive system. Instead, the tapeworm absorbs food that is digested by the host from its host’s intestine.
Describe the life cycle of a fluke. The eggs are fertilized in the female and she lays the fertilized eggs in the host. The eggs leave in the host's waists and often infect snails after being deposited in water, other hosts like humans, can be infected while swimming.
What is the most widespread human disease caused by flukes? Schistosomiasis
List 3 ways roundworm are helpful to humans. 1. They enrich the soil by breaking down dead organisms 2. By creating burrows through which oxygen circulates 3. Other roundworms kill insect pests like termites, fleas, ants, beetles, and many more
Created by: llessmann
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