Double fertilization in flowering plants involves the fusion of two sperm cell nuclei of the male gametophyte with two cell nuclei of female gametophyte. One sperm fuses with the haploid egg cell to form the zygote; the other sperm unites with the diploid central cell to form a triploid cell that will develop to an endosperm.
Duration : 0:0:50
Cutting flowers to last longer in a vase requires trimming the stems underwater, snipping them at a 45-degree angle and replacing the water every day. Trim the ends every few days for longer-lasting fresh-cut flowers with advice from a sustainable gardener in this free video on gardening.
Expert: Yolanda Vanveen
Contact: www.vanveenbulbs.com
Bio: Yolanda Vanveen is a third-generation flower grower and sustainable gardener who lives in Kalama, Wash. She is the owner of VanveenBulbs.com.
Filmmaker: Daron Stetner
Duration : 0:2:33
