[BIO202H5] - Midterm Exam Guide - Ultimate 15 pages long Study Guide!
Document Summary
Animal that has a cecum can break down cellulose (in plants) Terrestrial environments have other advantages and disadvantages: they are dry all the time, their body is not supported by buoyancy, there is more light, oxygen is easier to extract, nutrients is harder to get. The amount of water has changed over time. As animals get bigger, their volume increases. Surface to volume ration changes drastically as you get large. Volu(cid:373)e i(cid:374)creases, surface area does(cid:374)"t i(cid:374)crease as (cid:373)uch so the ratio decreases. Thermoregulation has to be taken into account for larger organisms. There is an internal mechanism that regulates thermoregulation. For aquatic animals, oxygen is a problem: being bigger increases oxygen intake. In larger animals, there are other structures that can support the larger structures. Breaking up larger structures will increase surface area. The anatomy of certain structures will be different for organisms of different weight. Amphibians rely on their outer skin to get rid of heat.
