Biodiversity, native plants, introduced species, exotic plants-if you are interested in natural areas or even in gardening or landscaping, these are words you have probably run across.
Biodiversity refers to the genetic variation of all life on Earth.
If you collect seeds from the wild, for example, you know that often it won't germinate evenly, or under all conditions. Some seeds may germinate soon after maturing. Some may germinate the following year. Some may require a period of cold to break dormancy, whereas others may remain dormant for years. But in some years, there might be an extra long growing season, and seeds that germinated immediately might have had time to grow, flower, and set seed before winter.