Friday, January 30, 2015
A Matter of Selection
Our plants have grown since the last time we saw them. Like many of the plants in the garden, they look fully grown and have traits that set them apart from the other types of Brassica Oleracea. The most differences I saw in the garden involved the shapes of the broad leaves. Some were more ridged about the edges, some had bumps that looked like little air pockets, some had leaves that were softer around the edges, etc. The most similar trait of the Brassica Oleracea was the color of the plants. The leaves were all a dull dark green color and the stems of most of the plants are purple. All of the plants in the garden have grown from similar looking seeds to plants of variety with many forms. Like any living organism, these plants and their genes have changed over the years to adapt to their environment and co existing species. People have also performed artificial selection and mutations on plants in order for the plants' traits to meet their needs. For example, there is selective breeding among plants, which is a process in which people breed different plants for specific traits. Both natural selection, which is the process of organisms naturally gaining more traits that are more fit for the environment they live in, and artificial selection are connected to decent with modification; the descendants of the original plant have modifications made to them but are still basically the same plant. These processes helps organisms survive in their environment for much longer than they would have originally. The plants' most similar trait, anatomy wise, is the stem. It is cylindrical with smaller stems sprouting from it and leading to the veins of the leaves. Plants have similar traits because they all come from one ancient organism, and from there they have mutated to fit their individual environment, but many still have the same basic structure or at least a few of the same traits. People can also breed different plants by using controlled pollination to get desired traits.
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