by B. Leslie Baird

Created on: November 17, 2009   Last Updated: February 25, 2011

Biology is defined as the science of life. Projects for a biology science fair can range from studies of human, animal or plant life. There are many difficulty levels available for biology projects depending on the grade level of the science fair. For a student to be able do their best job, they should pick an area of biology that most interests them and is appropriate for their grade level. Once the student has picked an area they are interested in they should choose the question they want to answer. The student should form a hypothesis, or projected outcome, of their project. When they have completed the project they can then summarize the results to show whether or not their hypothesis was correct.

Plant studies:

One of the easier, yet time consuming projects, involves plant growth. Whether starting from a seed, or a young plant, the factors involved in the plant's growth are monitored over time. The student should have multiple seed starts or similar young plants for this project. By recording the amount of growth and comparing it to different amounts of watering and sunlight the student will have a project for an easy level science fair. To add difficulty levels, results can also be recorded for the addition of fertilizers and even documentation of soil ph levels. The environmental temperature can also be studied and recorded. Photo documentation for this project will add to the overall effect for the final display. While portions of this type of experiment can come under the category of chemistry, the results are plant biology.

Projects involving human biology:

One of the easiest human biology projects involves a study of the sense of smell. This project will require several volunteers and should be well documented unless the student has the opportunity to present the complete project during the science fair. Have a variety of different sample foods available, chocolate, bread, onions and buttered popcorn are only a few of the ideas. Choose foods that are known for a strong smell. Also provide a set of nose plugs for each volunteer. Record each participants remarks of how each food tastes without a nose plug and then have them try the same foods with their nose blocked, preventing them from smelling the food. Analyze the differences that are reported.

Another human study project can be determining how room temperatures effect a participants ability to concentrate on a task. Have several paper tests available, math or reading are the best type,

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