Apendix+Pt.2

I wasnt able to upload the picture with labels and picture of charles darwin but when i email it to Mr.Happer i will be able to get the pictures included.

Appendix 2

Pg.634 from Chapter 25 A main concept that was part of our experiment is called Phototropism. Wondering what phototropism is? Well Phototropism is how a plant usually grows towards its light source. Many people have done experiments to show phototropism. In a scientists experiment conducted by the Darwin’s there were a few special things discovered about auxins in phototropism. You may now be asking what auxins are! Well auxins form during phototropism. Auxins are on the stem and they form towards the light. They go towards the light causing a higher concentration on one side and making the plant go towards the light source. This is why a plant will bend in the certain way! The second part to how phototropism occurs is hormones! All plants have hormones which make them grow. Certain cells that are within the plant affect certain areas more than others. These hormones within the plant make the plant grow and when working with the auxins the plant will grow in a certain way. All the cells work together within the plant to achieve phototropism.

Charles Darwin is the scientist who came up with the discovery of the theory Phototropism. He had many ideas that had to do with plants and he created books such as The Power of Movement in Plants and kept close records of his plants throughout his time.