Concept:
Plants can develop embryos from various cells. When an embryo develops from an unfertilized egg cell, it follows a specific biological pathway.
Step 1: Defining Parthenogenesis.
Parthenogenesis is the development of an embryo directly from an unfertilized egg cell. In the context of in vitro gynogenesis, triggering the egg cell to divide without fertilization leads to the formation of a haploid gynogenic plant.
Step 2: Evaluating Other Terms.
Androgenesis (3) is the development of a plant from male gametes (pollen). Embryogenesis (4) is a broad term for any embryo development, whether zygotic or somatic. "Apogenesis" is not a standard biological term used in this context.
Step 3: Conclusion.
The specific development of a plant from the female egg cell without sperm involvement is known as parthenogenesis.