Purpose: The purpose of this lab is to determine which solution is best for sprouting peas.
Background Information: (1) The current topic we are learning about now is the eight characteristics of living things. Peas are living, but we are testing different solutions to see which one helps its life prosper. The eight characteristics of living things are, they are made up of cells, they can reproduce, sexually or asexually, they are made up of a genetic code, they can grow and develop, they use energy, they respond to their environment, they have a stable internal environment, and they are able to adapt and evolve. This lab relates to that topic because peas are living things and we are going to be observing how they grow and develop. (2) Part of Biology is studying living things, peas included. The way things grow and how plants grow is part of science and this information can be used in the real world because we eat peas a vegetable and it is useful for us to know how they grow best. (3) The formula for this lab is the percent of germination equals the number of peas sprouted, divided by the number of seeds in the jar, multiplied by 100. The solutions that my group chose to test were salt, sucrose, and rubbing alcohol. Rubbing alcohol is a clear, colorless, liquid with a distinctive odor. It is irritant to body tissue and you should seek medical attention if it touches your skin or eyes. It is a class 1 B flammable liquid. Salt is odorless and is slightly toxic by ingestion. Call a physician for further medical treatment, observation, and support after first aid. Avoid contact with eyes, skin, and clothing. Sucrose is basically sugar, and it is hard white crystals with a malt like odor. It is not considered a hazardous substance. Again, seek medical help for further observation after first aid. It is a nonflammable substance. Avoid contact with eyes, skin, and clothing. (4)
Flinn Scientific, Inc. Sodium Chloride. 23 Feb. 2012.