Feedback+From+the+Environment-Tyler+Young


 * __Tyler Young:__**

1. What sensory structures does the organism have? What advantage exists for that specific structure? Are there similarities to structures found in the other organisms? **The pig has the nose to smell, tongue to taste, ears to hear, eyes to see. The starfish has tubed feet that help them feel and move around, they have eye spots to sense light and dark, their spines help them feel, and tips of their rays are sensitive to chemicals. The crayfish have two sets of antennas which help them move and feel for food.** 2. How has evolution been part of their survival? **There are different species of pigs all around the world. Each specie has evolved in it’s own way to survive and become safe in a dangerous environment. Some have grown tusks to find food and protect themselves. Some have come up with ways to become comfortable, safe, or protected in their environment by doing things they didn’t used to do before. This ensures the survival of the pig species.** 3. Follow the taxonomy of each of the organisms from kingdom to species. **For a pig, it is animalia, chordata, mammalia, theria, euteria, artiodactyla, suidae, suinae, and sus. For crayfish it is animalia, arthropoda, crustacea, malacostraca, decapoda. For starfish it is echinodermata, asterozoa, asteroidean, forcipulatida, asteriidae, asterias, rubens.** 4. What are their cousins? What is one of their past ancestors (extinct) of which they share something in common? **A cousin of the feral pig is the boar. An ancestor of the pig is the dinohysus which had tusks and a body structure like pigs today. A cousin of the crayfish is the lobster. An ancestor of the crayfish is the antrhopod which had a hard outer shell and legs like they do today. The cousin of the starfish is the brittlestar. An ancestor is the asteroid which has radial symmetry and sensory structures as starfish today.**