The development of an embryo from an egg cell without fertilization is referred to as:

Correct option is C

· Parthenogenesis is the development of an embryo from an unfertilized egg cell without the involvement of male gametes.
· It is a type of asexual reproduction that occurs naturally in some plants, insects, and other organisms.
· Examples in plants: Citrus, Mango, and some varieties of hawthorn.
· Apogamy: Refers to the development of an embryo without fertilization from somatic or vegetative cells.
· Apospory: Formation of a gametophyte without meiosis, directly from somatic cells.
· Androgamy: Refers to the fusion of male gametes in reproduction.
Thus, the correct answer is (c) Parthenogenesis.