Question

Describe the process of double fertilisation in angiosperms.

Describe the process of double fertilization in angiosperms.

Answer 1

In angiosperms, double fertilization is a complicated process that involves two stages, such as syngamy and triple fusion, respectively. A female gametophyte is joined to the two male gametes during the process. In angiosperms, a male gamete travels toward the egg cell and combines with its nucleus during the process of syngamy, which creates the diploid cell known as the zygote. The Primary Endosperm Nucleus (PEN) is created when the other male gamete approaches and merges with the two polar nuclei. This procedure is known as triple fusion because it entails the merging of three haploid nuclei. The embryo sac is where these two forms of fusion, syngamy and triple fusion, occur. This process, called double fertilisation, is specific to angiosperms.

Answer 2

In angiosperms, double fertilisation occurs when two male gametes fuse with a female gametophyte. A diploid zygote is created when the egg and one of the haploid sperms combine. A triploid nucleolus is created when the other sperm nucleus joins the megagametophyte's two haploid polar nucleus. This nucleus is known as the primary endosperm nucleus and develops into an endosperm. Double fertilisation refers to the entire process of fertilisation that includes the fusion of one male gamete with the egg and the other male gamete with the secondary or polar nuclei.