Which One of the Following Choices States a Major Difference

Multiple Choice

Which one of the following choices states a major difference between the life cycle of an angiosperm and a gymnosperm such as pine?

A) Angiosperms are dioecious;pines are not.
B) Angiosperms use a pollen tube to deliver sperm to the egg;pines do not.
C) The tissue surrounding the embryo is triploid in angiosperms;it is diploid in pines.
D) The megaspore mother cell is diploid in angiosperms;it is haploid in pines.
E) Microspores are produced by meiosis in angiosperms;they are produced by mitosis in pines.