Question

Which plant division has seeds with a 3n endosperm due to double fertilization?

Answer 1

Answer:

Angiosperms have seeds with an 3n endosperm due to double fertilization.

Explanation:

• Double fertilization is found only in flowering plants.
• In angiosperms, the female gametophyte does not grow after reaching eight nucleate stage.
• After fertilization and triple fusion, the zygote and primary endosperm are created and further growth of embryo sac continues.
• Triple fusion is the fusion of two haploid polar nuclei of female gametophyte and one male nuclei. This results in a  3n nucleus.
• The developing embryo obtains nutrition from the endosperm.
• If fertilization fails no endosperm is formed.