Flat worms!!

Platyhelminthes

Flat Worm

The Facts …

Body symmetry- Bilateral

Reproduction- Sexual and Asexual

(or regeneration)

Movement- Muscular or cilliary movement

Food- scavengers or parasites

Tapeworms ! (ewwww)Tape worms are parasitic.

Host- an organism which the parasite lives in.

Parasite- absorb food from the host’s digestive system

Examples of creatures in Phylum

Platyhelminthes…

Examples of creatures in Phylum

Platyhelminthes…

Planaria (Dugesia dorotocephala)

Eye spots (sense light only)

Planarians are famous for being able to regenerate lost body parts.

This part is called the _Scolex_. It latches onto the intestine of the host animal.

How do tape worms get so long?The Scolex of the tapeworm attaches to the

intestine of the host. The tapeworm thrives

off the nutrients of the host. The scolex

produces a chain of segments that can

stretch on and on and on and on….

How do tape worms get so long?

The Scolex of the tapeworm attaches to the

intestine of the host. The tapeworm thrives

off the nutrients of the host. The scolex

produces a chain of segments that can

stretch on and on and on and on….

What is the longest tape worm ever found to date?

In 1991, doctors pulled a totall of 37 feet of

tapeworm out of Sally Mae Wallace's body

through her mouth

What do Planarian and Frankenstein have in common????

Regeneration !

Regeneration is….

The ability of an organism to regrow lost or dead parts.