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 are flatworms, nematodes are roundworms, and annelids are segmented worms. Flatworms are aceolomates, meaning they have  no body cavities. The gut is completely surrounded by tissues and organs. Roundworms have a body cavity between the digestive tract and muscles.