It means you get another life !!
There are different coloured mushrooms that you can collect in Super Mario Bros. The red mushroom will make you larger. The green mushroom will give you 1Up - which is another life.
Man + 1up! (Man = beast + life) (1up = mushroom + life)
If your Mini Mario and there is a ledge near the pole, you could jump on top of it and get 1UP.
Mushroom, Invincibility (looks like a star), 1up mushroom (gives you an extra life), fire flower (let's you use fireballs), mini mushroom (shrinks mario/luigi), mega mushroom (makes mario/luigi grow to a huge amount), and blue shell.
Yes as Mario only you can carry toad (the mushroom dude) to the flag after that you get a 1up from him
yoshi is at the top of the castle along with three 1up mushrooms and a wing cap block.
Mario and Yoshi
Mario + 1 up = luigi Mario + dino = Yoshi
You get near it and inhale it.
To get 1Up on Little Alchemy, the combination is Life + Mushroom
5up, 2left, 1down, 1right, 1down, 1left, 1down, 1right, 2down, 1up, ileft, 1down, 4left, 1up, 3right, 2up, 1down, 3left, 1up, 3right, 1up, 3left, 1up, 2right, 1left, 2right. that is it, thanks!
The cast of The 1UP Show - 2005 includes: James Meilke as himself