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.
Platyhelminthes. The name of the phylum derives from the Greek platy meaning flat and helminth meaning worm.. The Platyhelminthes are the simplest animals that are bilaterally symmetrical and formally triploblastic (composed of three fundamental cell layers).http://www.tolweb.org/Bilateria/2459. Four Clades or Classes of Platyhelminthes: Turbellaria-The Free-Living Flatworms.omplex, through incomplete gut in free living forms, absent in some parasitic forms. The following organ systems are present. Integumentary system :The epidermis is composed of a wholly or partially ciliated, syncytial or cellular epithelium, with gland cells and sensory nerve endings.