Describe any two modes by which apomictic seeds can be produced?

THE TWO METHODS ARE DISCUSSED BELOW
1. AGAMOSPERMY: IN THIS,SEED OR EMBRYO IS DERIVED FROM DIPLOID EGG CELL FORMED WITHOUT MEIOSIS AS WELL AS SYNGAMY. THE DIPLOID EGG CELL DEVELOPS INTO EMBRYO WITHOUT FERTILISATION. FOR E.G. APPLE

2. ADVENTIVE EMBRYONY: IN THIS METHOD DIPLOID CELLS SURROUNDING THE EMBRYO SAC, E.G. NUCELLUS AND INTEGUMENT PROTUDE INTO SAC AND DEVELOPS INTO EMBRYO. THIS ALSO LEADS TO POLYEMBRONY

THANKS

KEEP POSTING