Double fertilization is found without any exception in
Bryophytes
Gymnosperms
Angiosperms
Pteridophytes
Characteristics of angiosperms -
1-Contains sex organs of the plants
2-Double fertilization present.
3-Endosperms generally triploid.
4-Heterospores present.
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Double fertilization is a process unique to flowering plants (angiosperms), which results in the formation of triploid nucleus that develop into endosperm