Question

What would be the ploidy level of the endosperm tissue after triple fusion occurs?

Options

• Haploid (n)

• Triploid (3n)

• Diploid (2n)

• Tetraploid (4n)

Answer 1

The primary endosperm nucleus is formed by triple fusion, which involves one male gamete (n) fusing with two polar nuclei (n + n). This results in a nucleus with the genetic formula n + n + n = 3n, making the endosperm tissue triploid. This 3n endosperm is unique to angiosperms and provides nutritive support to the developing embryo.