Hello Parween,

Selaginella belongs to a class LYCOPSIDA which is a part of pteridophyta. These are present on the tip of the plant.

Equisetum or pipe belongs to the class SPHENOPSIDA which is a part of pteridophyta. These are present on the apical part of them aerial stem.

Pteris belong to PTEROPSIDA. Each and every leaf contain sporangia at the time of reproduction, but they do not have cones.

Hope it helps.

Good Luck!