Which of the Following is a Characteristic of All Angiosperms

Question

Which of the following is a characteristic of all angiosperms?
A) complete reliance on wind as the pollinating agent
B) double internal fertilization
C) free-living gametophytes
D) carpels that contain microsporangia
E) ovules that are not contained within ovaries

Accepted Answer

Double internal fertilization is a characteristic unique to angiosperms, where one sperm fertilizes the egg to form the zygote while the other sperm fertilizes the polar nuclei to form the endosperm. The other choices are not characteristic of all angiosperms.