Wednesday, August 11, 2010

Biology Collection 2: Brenden Arnold

All of the cornstalks in the field shown here are autotrophs. Autotrophs are producers. They make organic compounds such as sugar and starch from the energy they collect from the sun. Autotrophs are the base of every food chain in the world. They pass energy on to herbivores, who then pass it on to predators.













This praying mantis I found in a field of tall grass is a eukaryote. A praying mantis is a eukaryote because its cells have organelles that are enclosed in membranes. It's cells also have a nucleus (which also has a membrane). The cells of a prokaryote do not have a nucleus or other organelles enclosed by membranes.







This is my mom's flower. It's also called an angiosperm because all flowering plants are considered angiosperms. They are the most diverse group of land plants. They produce pollen and seeds.









This is the shell of a parasite known as a locust or cicada. They are a parasite because they feed off of trees and may lay their eggs there. Locusts benefit at the cost of trees.










This is a tendril of a plant. Tendrils are used as support for the plant. They usually grow until they touch something. Then they grow around it, helping to keep the plant in place. Tendrils can perform photosynthesis. They can be formed from modified leaves, modified shoots, or auxiliary branches.














This flower is an example of radial symmetry. The parts of the flower are duplicates and are distributed around the center. If there were a line across the center of the flower, the two sides would be mirror images of each other.









I took this photo of my coleus plant because there's a meristem growing at the top of it. Meristems can grow on other parts of the plant besides the top. Meristems are growing spots on plants. They're cells are young and undefined. They are needed to expand and make new parts such as organs.







This is simply a picture of my thumb taken in my house. Keratin is a very strong type of structural protein. It is mostly used in the body to make up tough exterior features such as skin, hair, and nails.









This is a picture of ivy growing on the trunk of a tree. This is an example of commensalism. The ivy uses the tree as support to grow. However, the tree isn't affected by the ivy. The ivy growing on the tree does not benefit the tree, but the ivy doesn't harm the tree either.








This is a picture of some thorns that I found in the woods. Thorns are used by plants to protect themselves in most cases. Some seeds have small thorns on them to stick to hairy animals in order to be spread.

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