You have a really leafy houseplant that completely shades the soil in the pot where it is growing. You notice that some roots are starting to penetrate through the soil (likely these are new roots growing from the pericycle of an existing root)

Question

If you do nothing, what would you
expect to happen to the growth of these roots and why?
A. The roots will continue to grow up because
the root meristem tissue is arranged exactly
like apical meristem tissue.
B. The roots will continue to grow up because
auxin is not being redistributed in the shady
environment on the soil surface.
C. The roots will grow downward back into
the soil because the statoliths are
redistributing due to gravity and that will
change the direction of growth.
D. The roots will grow downward because
water stimulates root growth and the root will
be more moist on the side that is touching the
soil.

Answer 1

C