|Compare homosporous (of seed plants and some ferns and club mosses) producing megaspores and microspores|
|heterosporous (hět'ər-ə-spôr'əs, hět'ə-rŏs'pər-əs) Pronunciation Key
Producing two types of spores differing in size and sex, the male microspore and the female megaspore, which develop into separate male and female gametophytes. All seed-bearing plants, as well as some ferns and other seedless plants, are heterosporous. Compare homosporous.