Leaves go up and roots go down
but how do they know where's the ground?
They have no eyes, they cannot see
let's investigate this mystery
Leaves and stems respond to light
lengthen when dark, in sun grow tight
thus as chicks stretching neck for meal
our earth-bound friends hunger's fulfilled
the roots respond, gravity is felt
with statoliths that drop in cells
and signal for the downward stretch
to gather water and nutrients
for us to hear to smell and see
is not to do, we are quite free
but plants cant help but to respond
from arctic wilds to your front lawn.