# Lab 5 Worksheet Photosynthesis

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Lab 5 Worksheet Photosynthesis
Name: _______(savanna chatham)_________________

Virtual Lab #5- “Which Colors of the Light Spectrum are Most Important for Plant Growth?
Instructions:
Open the link to Launch “Virtual Lab #6- Photosynthesis”
Read all instructions on the left-hand side of the lab.
Watch the short Video at the bottom of the lab
Complete the “Pre-Lab” Questions.
Complete the Lab Activity
Record your findings in the “Results” and “Post-Lab” sections and answer all review questions
Pre-Lab:
1.) List all of the colors found in the visible light spectrum (We covered this in lecture)
Red - Orange - Yellow - Green - Blue - Violet
2.) Make a hypothesis about which color of the visible light spectrum causes the most plant growth, and which color of the visible spectrum will cause the least plant growth. (Your choices are: Red, Orange, Green, Blue, Violet) Give a reason for your hypothesis
I think that the blue will cause the most plant growth because it won’t get too warm and that is one of the primary colors that plants absorb.
Results:
Table 1. Plant growth under different color filters
Filter Color
Spinach Avg. Height (cm)
Radish Avg. Height (cm)
Lettuce Avg. Height (cm)
Red
18
13
11
Orange
14
8
6
Green
2
1.1
3
Blue
19
14
12
Violet
16
11
8

Reminder: (Plant 1 height + Plant 2 height + Plant 3 height) / 3 = Average height
So, if the first spinach plant grew 16 cm, the second grew 22 cm and the third grew 18 cm…
(16+22+18)/3 = 18.7 cm
*This gave some of you trouble last time, so let me know if you have any questions

Post-Lab:
1.) How did you test your hypothesis? When testing your hypothesis, which variables did you change in order to compare your growth results.
I had to change the lights on the plants.

2.) Analyze the results of your experiment. Did your data support your hypothesis? Explain.
It did the blue light did the best out of all the lights.
3.) Describe any differences or similarities you found among different types of seeds. Did the type of plant seem to affect

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