Botany - Plant Kingdom Question with Solution | TestHub

Pteridophytes divided into four classes- Psilopsida, Lycopsida (club mosses), Sphenopsida (horse tails) and Pteropsida or Filicinae (ferns). Among all these four classes, only Lycopsida includes both homosporous and heterosporous forms. Homosporous pteridophytes produce only one type of spores e.g clubmoss,Salviaand puzzle grass. Heterosporous pteridophytes produce two types of spores one megaspore and other microspore. Example of heterosporous pteridophytesSelaginella, Salvinia, Marsileaand Azolla.