The apomixis that occurs commonly in Citrus species is (JRF Plant Science 2019)

✅Explanation: Sporophytic apomixis is the most common type of apomixis in Citrus species. In this process, the embryo sac develops without meiosis, and the embryo develops from an unfertilized egg cell.

📌Other Options Explanations:
-Diplospory: A type of gametophytic apomixis where the embryo sac develops from a megaspore mother cell that does not undergo meiosis.
-Apogamy: A type of gametophytic apomixis where the embryo develops from a cell other than the egg cell in the embryo sac.

🔑Key Points:
-Apomixis is a form of asexual reproduction that occurs via seeds, in which embryos develop without fertilization.
-Leuwenhoek is credited for the discovery of this phenomenon in 1719 in Citrus seeds.
-Apomixis is found in over 300 species of flowering plants.  

• Diplospory:
-The embryo sac is derived from the megaspore mother cell either directly by mitotic division or by interrupting meiosis.
-An eight nucleate embryo sac is formed.
-It is a common process in plants like maize and wheat.

• Apospory:
-The Apomictic embryo sac is derived from the nucellar cells.
-An eight nucleate embryo sac is formed.
-It is the most common type of apomixis in higher plants.  

• Adventive Embryony:
-Embryos arise from a cell or a group of cells either in the nucellus or in the integument.
-The cells of integument or nucellus are diploid and hence the resultant embryo is also diploid.