Many factors contribute to whether an organism can thrive in a given environment. Each species has a range of tolerance that can determine whether the species is commonly observed or only observed rarely and under very specific environmental conditions. In this lab, you will explore one of the factors that impacts survival of living organisms: the acidity or alkalinity of soil and water.
Time: 1 hour plus 7 days for observation.
IMPORTANT: Seven (7) days of plant growth are needed to complete this experiment.
Additional materials needed: paper towels, scissors, sunny location, tap water.
Concepts to explore: Environmental impact on a living organism
Experiments
Experiment 1: Effects of pH on radish seed germination
- Students measure acidity and alkalinity of soil to determine the range of pH tolerance for the seed.
Grading:
- To obtain full credit you need to answer all questions in your own words and in full sentences, and demonstrate that you have completed and understood the laboratory exercise(s)/experiment(s) and the underlying biological concepts. Most lab assignments have several exercises/experiments, unless otherwise stated, you need to complete all parts of each lab assignment. If you get unexpected results, discuss and provide a possible explanation.
- Points will be subtracted for poor English, including more than a few spelling and grammatical errors.
- When applicable, points will be subtracted for missing references.
0 comments