A good laptop with Microsoft Office pre-installed? I wanted to get a decent laptop that comes pre-installed with Microsoft Office and has at least a 120 GB Hard Drive. good laptop with Microsoft Office pre-installed? I wanted to get a decent laptop that comes pre-installed with Microsoft Office and has at least a 120 GB Hard Drive.
Other Platyhelminthes characteristics shared by these creatures is they are bilaterally symmetrical, this means the left and right sides of their bodies are mirror images of each other. They have distinctive head and tail ends and their body contains three cell layers.
Phylum Platyhelminthes (the flatworms) ~1300 species ie: Planarians, Tapeworms, Flukes Some are free living and some are parasitic. Soft, flattened worms with tissues and internal organ systems. The simplest animals to have 3 germ layers, bilateral symmetry, and cephalization.hylum Platyhelminthes (the flatworms) ~1300 species ie: Planarians, Tapeworms, Flukes Some are free living and some are parasitic. Soft, flattened worms with tissues and internal organ systems. The simplest animals to have 3 germ layers, bilateral symmetry, and cephalization.