Why PC has less-services than my laptop.

The PC has 2GB RAM, when I saw the Task Manager, it doesnt have many services as my laptop has, it doesnt have like Service Local Host etc. It's memory is only 36% but my laptop, has Service Local Host etc and many services has 60% (Note: The PC has only one system service and the rest are apps.

Different drivers can load services and background apps, so unless the hardware is identical, I wouldn't expect your two systems to be identical. For example, a laptop will also have a wireless card, so that could account for several services and apps running that a typical desktop doesn't have.