Biology · PLANT KINGDOM

In pteridophytes, sporangia are subtended by leaf-like appendages called sporophylls. In which of the following genera do sporophylls aggregate to form compact structures known as strobili or cones?

1. A
   Selaginella and Equisetum
2. B
   Pteris and Psilotum
3. C
   Dryopteris and Adiantum
4. D
   Salvinia and Ferns