annelids(worms) review

I.Vocabulary: 


Cilia: short threadlike structure that aid in locomotion.


Free-living: doesnt depend on another organism for food or a place to live.


Anus: is and opening at the end of the distive tract through which wastes leaves the body.


II. Section 3 review 


1. compare and contrast the body plan of a flatworm and the body plan of a round worm.


(photos comparing everything)

2. distinguish between a free-living flatworm and a parasitic flatworm


parasitic flatworms live inside a host and take all of their nutrients, a free living flatworm does not need a host to survive.

3. explain how tapeworms get energy.


Tapeworms basically get their energy from their host, gaining the nutrients people/animals get from food. They tend to make people lose weight due to the fact that they are leeching off all the nutrients you can get from food, which is why people/animals with tapeworms become thin, and lose weight.






Article:

CALIFORNIA | LOCAL

Mussels Unsafe, Officials Warn

May 1, 2001 | MAI TRAN

Health officials warned residents not to eat mussels and other mollusks harvested from local waters because the bivalves contain high levels of toxins. The annual quarantine begins today and ends Oct. 31. Mollusks such as mussels, clams, oysters and scallops contain elevated levels of toxin and could poison those who eat them without first removing the digestive organs, said Mike Spurgeon, deputy agency director of the county Health Care Agency.

Response:

--That the officials should´t warn shouldve just poivided the residents 

to eat plus removing the digestive system would be like removing everything

from the bivalve body.