Apologia Science Biology, Module 8 experiment.

The environmental factor and its effect on radish leaf color.  To identify how light affects the growth of the radish plants.  The radish plants will grow in the dark but only for a short time.  The plant's food is stored in the seeds but without sunlight, photosynthesis cannot occur for their continued growth.  Lets find out.

Here is what you need:
~A package of radish seeds. ($0.25 a pack at the Dollar General).
~2 shallow dishes or planters. (The Dollar General had a wide assortment.  We used two small plastic planters, $0.20 each).
~soil.
~plastic wrap. (I am not a plastic person, I do not have any plastic wrap in my house. I did find a few baggies so I cut them open to use for this).
~a box to cover one of the plants.

Put some soil in your planters, wet the soil, then add at least 30
of the radish seeds to the top of the wet soil.  Mark one of the planters
with the word "light" and cover with plastic.  Cover the other planter with plastic and
cover with the box.  Put both of these in the same area, an area which is warm and
there will be sunlight.

This is the starting photo taken 04/21/2015.

Day 2. This is the planter without the box covering it.  Not a lot going on.

Day 2. This is the planter covered by the box.  Not much going on here either but there is a slight difference to the planter exposed to the light.

Day 3. The uncovered planter.  A little sprouting starting to happen.

Day 3. The covered plant is sprouting at a much faster rate than that of the uncovered plant.

This is a close up of day 3 the covered plant.  The sprouts look feather-like.

Random picture of radish leaves.

What we are looking for are the leaves.  The leaves in the light will start out yellow but will turn green because of the sunlight.  The leaves under the cover of the box will start out yellow as well but will stay yellow because of the lack of sunlight.  These leaves will also increase in number.  As I stated above, the covered plants will not survive long without the process of photosynthesis.