Question

name the families of angiosperm where double fertilization doesn't occure​

Answer 1

Answer:

Angiosperms are defined by double fertilization, one sperm cell from the pollen tube fertilizes the egg cell and the other one forms the endosperm. In orchids there is no endosperm.

Answer 2

Endosperm, a product of double fertilization in angiosperms is absent in the seeds of orchids.13-Feb-2018 Helper cell i guess , because the 2 male gametes entering the embryo sac performs syngamy and triple fusion ( one male gamete with egg cell and another male gamete with 2 polar nuclie known as triple fusion ) so 1st 3 options involve in double 416 families
Abstract. Flowering plants, members of the clade Angiosperms or Angiospermae (), meaning enclosed seeds in Greek, are the most diverse group of land plants with 64 orders, 416 families, approximately 13,000 known genera and 300,000 known species.