Visit this site to learn about dioecious plants, species in which the male and female flowers are on different plants. Among the dioecious plant species are the ginkgo, hollies, date palms, sago palm,
persimmon, spinach, and asparagus. Why do people generally plant only male ginkgo trees in their yards?
Sexes in Ornamental Plants
Go to this Ohio State University Extension Service Sheet to learn more about dioecious plant species. Scroll down to see photographs of male and female flowers from several dioecious plant species. What are some common dioecious species of trees, shrubs, and vines?
Seeds for Future
Visit this site to learn about the National Plant Germplasm System (NPGS), a program of the U.S. Department of Agriculture. You can find out here what germplasm is and where the NPGS gets its germplasm. Why is it important to keep a collection of all known plant germplasm?
The Millenium Seed Bank Project
Go to this site by the Royal Botanic Gardens, Kew, United Kingdom to find out why we need to conserve plants and why we need seed banks. Why does a seed bank preserve the seeds of plants?
At this site by the Canadian Botanical Conservation Network you can find out why storing seeds in seed banks is important to the conservation of plant species. Scroll down to find out what types of seeds can be stored. What types of seeds cannot be stored in a seed bank? Why canít these seeds be stored in seed banks?
Pros and Cons of Genetic Engineering
At this University of New Hampshire site you can read short lists of pros and cons of plant genetic engineering. Read through both lists, then scroll down to see two tables that list how people at the university feel about genetic engineering. Do you have the same concerns they do about genetic engineering?