Question

If an angiospermic male plant is diploid and female plant tetraploid, the ploidy level of endosperm will be?

• A. Tetraploid
• B. Pentaploid
• C. Haploid
• D. Triploid

Answer 1

The correct option is B Pentaploid

Since in angiosperms, the phenomena of triple fusion occur, hence the endosperm after fertilization in such a plant will be pentaploid. This can be explained as follows:

The mother egg cell or Megaspore will contain two polar nuclei each with ploidy 2X and the nuclei from pollen will contain ploidy 1X hence after triple fusion the total ploidy of the endosperm will be 5X (2X from each polar nuclei and 1X from male germ cell or pollen).

So, the correct option is 'Pentaploid'.