Biology: The Science of Seeds

Part of the Show Me Science: Advanced series, this film introduces high school students to plant science, looking at the nature of seeds, while also outlining career possibilities. Starting with a description of the basic types of plant seeds worldwide, the program notes that 7,000 species are used and that the amount of land devoted to agriculture is now the size of South America. Since the ancient beginnings of agriculture, humankind has preserved seeds for future use; today, over 1,000 seed banks collect seeds, where they are cleaned, dried, and frozen to preserve for future decades. Seed banks are a necessary hedge against changing weather conditions, pests, fire, flood, and other natural disasters. Scientists are also finding ways to grow more food in the same amount of space using composting, mulch, and other processes. And while the concept is controversial, genetically modified organisms (GMOs)—in which DNA is modified in plants—offers another avenue being explored by researchers who are trying to increase production with drought- and insect-resistant plants. With GMOs, it’s even possible that vaccines and increased nutritional value may be introduced into plants. With new science occurring on several fronts, the field offers numerous career choices, including agronomist, botanist, naturalist, as well as work in ecology, environmental sciences, forestry, and teaching. Recommended. Aud: J, H, P. (T. Root)