The document discusses several types of plants including palms, cycads, and ferns. It notes that palms are angiosperms in the family Arecaceae, with over 2,600 species. It distinguishes between feather-leaved and fan-leaved palm varieties. Cycads are gymnosperms that produce naked seeds not enclosed in fruits, with three families and around 300 species. They resemble palms but differ in aspects like cone-like structures and colorful seeds. Common cycad species mentioned include Cycas revoluta and Cycas circinalis. Ferns reproduce via spores, have neither seeds nor flowers, and include varieties like Boston fern, Staghorn fern, and Bird Nest Fern.
19. gymnosperms
three families namely Cycadaceae,
Stangeriaceae and Zamiaceae.
300 different species.
They have a similar overall appearance
as palms. But cycads and palms differ
with each other in many aspects. A
characteristic feature of the cycads is
the production of cone-like structures
and colourful seeds.
dioecious plants