Genera like Selaginella and Salvinia produce two kinds of spores. Such plants are known as

1. Homosporous

2. Heterosporous 

3. Homosorus

4. Heterosorus

From an evolutionary point of view, retention of the female gametophyte with developing young embryo on the parent sporophyte for some time, is first observed in:

1. Gymnosperms

2. Liverworts

3. Mosses

4. Pteridophytes