Why do hornwort sporophytes differ from those of all other
plants?
A. They have a foot and a basal meristem, so sporogenous tissue
is formed continuously
B. The leaves are short and round, but contain enough conductive
tissue to maintain the entire structure
C. They produce chemicals that are toxic to animals, so can only
be spread by wind
D. They sporophyte is much larger than the gametophyte, which is
different than other closely related species