Can a cessna 150 be an ultra lite?

No, a Cessna 150 cannot be classified as an ultralight aircraft. Ultralights are defined by specific weight and performance limitations, typically having a maximum weight of 254 pounds (115 kg) for single-seat aircraft in the U.S. The Cessna 150, being a two-seat, light general aviation aircraft, exceeds these weight limits and is subject to different regulatory requirements.