The fronds of tree ferns are usually very large and multiple-pinnated, but at least one type has entire (undivided) fronds. The fronds of tree ferns also exhibit circinate vernation, meaning the young fronds emerge in coils that uncurl as they grow.he order Cyatheales, which includes the tree ferns, is a taxonomic division of the fern class, Polypodiopsida.
rap noun (MUSIC) A2 [ U ] a type of popular music with a strong rhythm in which the words are spoken, not sung:
Three Parts:Coming Up with a ThemeWriting the ChorusTweaking the MusicCommunity Q&A. A rap song is more than just words that rhyme -- it's a song to show how you feel about something. It's poetry in a sense. The hook or chorus in a rap song makes up about 40% of the song, and so a bad chorus can ruin an entire rap. Coming up with a hook that goes along with the rest of your rap and is unique and personal to you is essential to having a great rap.