DENDROLOGY

Detailed explanation-1: -Ans: Phanerogams are plants that have unique reproductive structures and are capable of generating seeds. Phanerogams are classified as gymnosperms or angiosperms, depending on whether or not the seeds are enclosed in a fruit when the fruit is harvested.

Detailed explanation-2: -Answer and Explanation: Ferns, gymnosperms (cone-producing plants), and angiosperms (flower and fruit-producing plants) are all plants, which means they are all multicellular and autotrophic.