Multiple choice In endosperms of Maize and Pinus, the ploidy levels are triploid in both plants triploid and haploid triploid and diploid diploid and triploid Reveal answer Fill a bubble to check yourself B Correct answer Explanation In angiosperms like Maize, the endosperm is formed by double fertilization and is triploid (3n). In gymnosperms like Pinus, the endosperm is a haploid (n) tissue formed before fertilization.