Worms! Flashcards
What is an Invertebrate?
a multicellular, heterotrophic organism that does not have a backbone.
What is a Hydrostatic Skeleton?
It is a fluid-filled compartment in the body
What is Diffusion?
The movement of a substance from a high area to a low area of concentration
What is the meaning of free living?
A following of life which one chooses to live freely
What is a Septum?
A septum is a wall dividing a wall. The structure is sheet-like
What are Oligochaetes?
Oligochaetes are animals that are aquatic and terrestrial worms
What is the characteristic of lacking coelom, a fluid-filled body cavity?
Acolomates.
Mouth before the anus. When an animal’s mouth is formed from the blastophore.
Protostome.
What is the Scolex of a Tapeworm?
It is the mouth. It is where the bearings are located to hook onto hosts so it can suck food.
The cavity is partially lined with tissues derived from the mesoderm and is called a “false coelom”.
Pseudocolem.
A phylum of worms with cylindrical and unsegmented bodies.
Nematoda.
What are Annelids?
are worms with segmented bodies. They have a true coelom that is lined with tissue derived from mesoderm.
An animal that relies on other animals for nutrients.
Parasitic
What are tapeworms?
long, parasitic, flatworms that live inside the intestines of their hosts.
The organ system of nematodes and annelids that allows food to pass through mouth and anus.
Digestive Tract
