Phanerogams are distinguished from non-Phanerogams by_______ .

The correct answer is their ability to bear seeds.

Concept:

Plant kingdom:

• It includes eukaryotic, multicellular, autotrophic organisms, that have a cell wall made up of cellulose.
• It is further subdivided into five divisions- Thallophyta, Bryophyta, Pteridophyta, gymnosperms, and Angiosperms.

Explanation:

Classification of the plant kingdom:

• The first level of classification is whether the plant body is differentiated into true roots, leaves, and stems.
• Followed by the presence of vascular tissue and then the ability to bear seeds. 
• Plants are broadly divided into two main categories- Cyptogems (non-phanerogams) and phanerogams. 
• Phanerogams are distinguished from non-Phanerogams by their ability to bear seeds.