In this investigation, students consider whether there is a relationship between the number of spines on a holly leaf and its height above the ground.
In this inquiry-based lab, students will construct an experimental setup to compare the rate of photosynthesis to the rate of respiration. This will make it possible to perform a quantitative analysis of the rate of photosynthesis under different light intensities.
In this activity, students make the root of a seedling grow through a maze by rotating a petri dish to different angles. When a seed germinates, a root and a shoot appear. Their directional movements are a response to gravity or gravitropism. Primary roots show positive gravitropism as they grow toward gravity.