Pluto - it is now categorised as a dwarf planet
Jupiter's planetary status has never and most likely never will be questioned. As of the this answering, Jupiter is a planet.
The dwarf planet Pluto lost its classification as a planet in 2006.
Pluto lost it's "planet" status and now is called a dwarf planet.
In our solar system; Pluto. It is now accepted as a "dwarf-planet".
There is no known planet that has been lost from our solar system. All the planets in our solar system, from Mercury to Neptune, are still present in their respective orbits. Some dwarf planets beyond Neptune's orbit have been discovered in recent years, but no large planet has been lost.
It is not considered a planet anymore, so yes, you could say that.
Pluto recently lost its status as a planet and is now a dwarf planet.
Pluto lost its status as a planet in 2006 when the International Astronomical Union redefined the criteria for what constitutes a planet. Pluto was reclassified as a dwarf planet due to its size and location in the Kuiper Belt.
Pluto
Pluto was ranked down to a dwarf planet in 2006
I think you mean Pluto, and the answer is no, Pluto is not a planet. It used to be but it was discounted as there are other similar-sized objects in space which have not been classified as planets because they are too small. Therefore, Pluto was degraded to a dwarf planet.
The Magic School Bus Lost in the Solar System happened in 1994.