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Mung bean lab report - examining the effect of light on growth

Categories: Light

First shred a large amount of paper towel into Quarter-sized pieces. Fill each bottle with the paper towel shreds until they are about one-sixth of the way full. Slowly and carefully fill each bottle with water until each piece of paper towel is wet. Make sure the paper towels don’t clump together in the bottle. Now place at least ten mung bean seeds in each bottle and cap the top after you have done so. Now place one bottle in an entirely dark environment, and the other in a generally light environment.

After a week, gather the two bottles and remove the mung bean sprouts from each bottle. Record the height of each mung bean sprout, and calculate the average height of the sprouts that grew in the dark environment and the average height of the sprouts that grew in the light environment.

Hypothesis:

The mung bean sprouts that grew in the light is will be taller than the mung bean sprouts that grew in the dark.

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Observations:

* The mung bean sprouts that grew in the dark did not produce any leaves.

* The stems of the mung sprouts that grew in the dark environment were of a white/yellow color while the stems of the mung bean sprouts that grew in the light environment were of a green color.

* The mung bean sprouts that grew in the dark were crisper in texture, than the mung bean sprouts that grew in the light.

Data:

My Data:

Plant #

Height (cm)

1

12

2

5.7

3

11.3

4

11.9

5

9.8

6

7.9

7

12.1

8

3.8

9

10.5

10

8

Average:

9.3

Class Data:

Height (cm)

Light

Dark

8.3

9.3

8.6

8.5

2

1.2

8.4

10.5

6.3

2.1

7.4

10.5

8

21.3

6.9

8.9

4.3

13.3

AVG: 6.7

2.2

6.9

6.4

15.6

AVG: 9.0

Conclusion:

The data from the experiment proves that the hypothesis is incorrect. The average height of the seedlings that grew in the dark is greater than the average height of the seedlings that grew in the light. The seedlings grew taller in the dark because they used all their energy to grow to find a source of light. But even though they grew taller, the mung bean sprouts that grew in the dark were significantly weaker than the mung bean sprouts that grew in the light.

Sources of error included wetting the paper towels with alcohol instead of water and pouring too little water into the bottle.

Cite this page

Mung bean lab report - examining the effect of light on growth. (2020, Jun 02). Retrieved from http://studymoose.com/mung-bean-lab-report-examining-effect-light-growth-new-essay

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