Question

Selaginella, dryopteris, equisetum, adiantum, lycopodium, pteris belong to how many classes of pteridophytes?

Answer 1

They belong to the following respective classes

Psilopsida : psilotum

Lycopsida : Selaginella , Lycopodium

Sphenopsida : Equisetum

Pteropsida : Dryopteris , Pteris , Adiantum

Answer 2

The classes to which these belongs are given below :

Selaginella belongs to the class named Lycopsida.

Equisetum belongs to the class named Sphenopsida.

Adiantum belongs to the class named Pteropsida.

Lycopodium belongs to the class named Lycopsida.

And Pteris belongs to the class called Pteropsida.

Other Points :

1. In pteridophytes, the dominant phase is the gametophytic body in their life cycle.

2. They are mainly found in cool and shady places.

3. These plants are very useful in medicinal purposes and also they acts as soil binders.