What Are Organisms in the Kingdom Plantae?

Organisms in the kingdom Plantae belong to the eukaryotic kingdom and are autotrophic, multicellular organisms that are capable of photosynthesis. They fall mainly under bryophytes and tracheophytes.

Examples of bryophytes are liverworts, hornworts and mosses. Since they are non-vascular, they do not have phloem or xylem, which means they do not have leaves, stems or real roots. Tracheophytes, which are vascular, can be further divided into seed bearing and spore bearing, pteridophytes and spermatophytes. Examples of pteridophytes are ferns and horsetails. Spermatophytes can be further divided into angiosperms and gymnosperms. Gymnosperms have naked seeds or ovule that are open to the elements for fertilization. Examples of gymnosperms are conifers. Angiosperms, which have a closed ovule or enclosed seeds, have flowers. Upon fertilization, these plants bear fruits.