Introductory Herbal Course Lesson Preview
This is ONE preview lesson taken from UNIT 3 in the Online Introductory Herbal Course. The Introductory Herbal Course is made up of 6 units including over 30 lessons and bonus lessons. To learn mor...

Getting Nerdy with Mel and Gerdy
Seed Plants: Angiosperms · Concepts of Biology
This diagram shows the lifecycle of an angiosperm. Anthers and ovaries are structures that shelter the actual gametophytes: the pollen grain and embryo sac. Double fertilization is a process unique to angiosperms. (credit: modification of work by Mariana Ruiz Villareal)