PROBLEM

Do plants need light to maintain their color?

A leaf will not maintain its color when denied light.

HYPOTHESIS # 2 (25% of the class)

A leaf will maintain its color when denied light.

Per Group

      Plant with broad leaves (Hawaiian Pothos)

      Potting Soil

      Large plastic measuring cup

      Black construction paper

      Transparent material (plastic bags)

      Scissors

      Scotch tape

      Crayons or colored pencils

      Data/Observation Sheets

1.           Each trial group located a pair of leaves that were similar in appearance.
 

2.           One of the leaves in the pair was covered with black construction paper and the edges were taped to block light from reaching the leaf.

3.           The other leaf was covered in transparent plastic material and taped at the edges.

4.           Steps 1 through 3 were repeated until each trial group had covered a total of ten leaves.

5.           As each pair of leaves was covered, each trial group numbered the leaf pairs in order from 1 to 5.

6.           Each day, for five consecutive school days, the black construction paper and the transparent plastic was removed from a set of leaves.

7.           Trial groups recorded their observations of the similarities and differences for both types of leaf covers.

8.           Observations were made in both written form and by illustrating what the leaves looked like.