Which two characteristics are shared by seedless vascular plants and nonvascular plants? they both have xylem and true stems. they both have true stems and use spores to reproduce. they both live in moist environments and have xylem. they both live in moist environments and use spores to reproduce.

The answer is " They both live in moist environments and use spores to reproduce. ". I know this cause I took the test and aced it, as seen below.

the correct answer is anaphylaxis.

anaphylaxis is a condition caused by insect bites, foods, medications, manifested by tongue swelling, shortness of breath, vomiting, low blood pressure. it sometimes may occur without an obvious reason. it is treated with epinephrine injection.other tretments include antihistamines and steroids,