IPA: /ˌhɛtəˈrɒspərəs/
KK: /hɛtəˈrɒspərəs/
Describing organisms that produce two different kinds of spores that vary in size and reproductive function.
Many plants are heterosporous, meaning they produce both large and small spores for reproduction.
Heterosporous → It is formed from "hetero-" (from Greek "heteros", meaning different) and "sporos" (from Greek "spora", meaning seed or spore). The word describes organisms that produce different types of spores, distinguishing them from those that produce only one type.
Think of 'different' ('hetero-') types of 'spores' ('sporos') being produced — that's what heterosporous means.