They can range in size from just a few inches tall to more than 12 feet in the case of the tree ferns. Some types of ferns are tropical. Others quite hardy. Their versatility aside, ferns are valuable in the home and garden because they prefer shade. In the landscape, ferns bring fresh green life to those hard-to-design dim corners.
Prokaryotic cells have various shapes; the four basic shapes are: Cocci - spherical Bacilli - rod shaped Spirochaete - spiral shaped Vibrio - comma shaped.
Characteristics of Prokaryotes. 1  They are single celled organisms and are much smaller compared to eukaryotic cells. 2  They are unicellular and their size ranges from 1 Âµm and 10 Âµm but in a few cases they may vary in their size from 0.2 Âµm to 750 Âµm.rokaryotes can be defined as the group of organisms, which lacks their cell nucleus. Organisms, with this cell type are known by the term prokaryotic organisms (or) prokaryotes. These prokaryotic organisms are the first organisms to be found in our planet earth.