We were able to present your data for all kinds of classroom investigations. Please take a moment to think about the impact your gardening experience had on each person in your class and all the others involved in this international science project. Jake Rutherford wrote to say he thinks that the outer layer of cells of the tulip leaf's function is to repel water. If you take a look at the shape of the leaf you can clearly see that the shape contributes to repelling water, too. The curved shape and pointed tip act to collect and direct rainwater downward to the soil where the roots can use it.
Most plants have wax in their epidermis.
The wax protects the leaf from losing too much water in the hot sun. Bulbs are a special kind of plant that need special conditions to grow. List as many factors that you can to explain how why these bulbs rotted. Scientists have to think backwards to solve a lot of their research questions. In the case of the Richardton-Taylor tulip garden, we could make a list of the factors that could cause the bulbs to rot, and then investigate.