In some species of Asteraceae and grasses, a special mechanism has evolved to produce seeds without the fusion of gametes. What is this biological phenomenon called?

Step-by-step solution

Although seeds, in general, are the products of fertilization, a few flowering plants such as some species of Asteraceae and grasses have evolved a special mechanism to produce seeds without fertilization, called apomixis. Parthenocarpy refers to the development of fruit without fertilization. Amphimixis is the normal sexual reproduction involving the fusion of male and female gametes. Polyembryony is the occurrence of more than one embryo in a seed. Answer: Apomixis