Question

Which of the organisms is most likely 50 meters in size? Lizard, tree, ant, or bacteria.

Answer 1

For such a great length there is no recorded lizard, ant, or bacteria so your answer (by process of elimination) you would get a Tree because some tree's have exceeded that limit of 50 meters.

Answer 2

50 meters is a length too big for any existing animal on Earth. Many trees achieve 50 meters in hight though.

Hope it helped,

BioTeacher101