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.
Ribosomes are larger (80S) and smaller (70S) in size, and chromosomes are multiple and linearly arranged with histones. The DNA of eukaryotes is much more complex than the DNA of prokaryotes. In prokaryotes, plasma membrane does not contain carbohydrates or sterols.