Question

How Does Light Affect Chlorophyll Development?
Task:
1. Place a damp paper towel in the bottom of each of five small glass jars and put two bean seeds on the towel in each jar. Cap the jars tightly.
2. Cover the five jars with red, blue, green, yellow, or clear cellophane. Label the lids with the color of the cellophane.
3. Place the jars in a sunny place for seven days.
4. After seven days, remove the cellophane from the jars and observe the color of the seedlings. Record your observations.

Analyze Your Results:
1. Why is it important to wrap one jar in clear cellophane?
2. What color of light was reflected from each jar wrapped in cellophane? What colors passed through to the seedlings?
3. What substance is missing in the white seedlings and why?
4. What color of light is required for chlorophyll development?
5. What do you think would happen if you exposed the uncovered seedlings to the sun?

Answer 1

Answer:

Chloroplasts are the engines of plants. ... They use light from the sun and carbon dioxide to produce energy compounds through the process of photosynthesis. Chloroplasts are full of chlorophyll, a pigment that absorbs sunlight to kick off that process.