World 7-Piranha Plant 2
From the Super Mario Wiki
World 7-Piranha Plant 2 is the second Piranha Plant level and thirteenth level overall of Pipe Land in Super Mario Bros. 3. The level becomes accessible upon completing World 7- 2 and its own completion unlocks World 7-.
At the start of the level are Munchers that move in and out of the pipes rhythmically, followed by a Venus Fire Trap shortly afterward. Next are hanging pipes with Venus Fire Traps in them, then Jump Blocks and a Koopa Paratroopa the player has to use to avoid the Munchers below. The middle pipe in the group of three ahead will lead to a chamber with a Super Mushroom, which will end the level upon collecting it.