No. It is part of what makes the Wii U special.
The Wii U gamepad cannot be used with the Wii.
No. The Wii U gamepad is not compatible with the original Wii.
No, the Nintendo Wii U can be powered on without a gamepad and a Wii remote can be used to open applications and games on the Wii U. However, it is strongly recommended to have the Gamepad because all Wii U games are compatible with the gamepad, but not all Wii U games are compatible with the Wii remote and classic controllers
Wii U games cannot be played on the Wii.
Yes, you can use a Wii Remote without the gamepad
Certain Wii U games have the ability to display the game on the gamepad only. This allows someone to be playing a game on the Wii U while the TV is being played for something else. Some games will automatically mirror what's displayed on the TV on the gamepad's screen while other games need to be set to display on the gamepad instead. There are also some games that require the use of both the TV and the gamepad.
No
All Wii U games can be played with only the gamepad while some can utilize the Wii remotes
No sadly you cannot but you can play with the gamepad as long as the console has power so you can play an assortment of games that dont need the television
All new Wii U consoles include a Wii U gamepad. As of February 15th, 2013, gamepads are not sold separately.
No, you cannot connect a Wii U controller to a Wii. Only Wii Remotes and other Wii accessories will work for the Wii, and the Wii U GamePad only works for the Wii U.