Ferns. Ferns, horsetails, and their allies make up the second group of land plants, the pteridophytes. These plants all have vascular systems, made up of xylem (flow of water and nutrients from roots to leaves) and phloem (flow of sugars and other metabolic products from leaves to roots).e will not go into the details of this, other than to state the two generations are called the gametophyte (produces gametes) and the sporophyte (produces spores) generations. We need to mention these because the four plant groups each have unique alternation of generations.
What the difference between Intel Cores: Core i3, Core i5, Core i7 â the difference in a nutshell. If you want a plain and simple answer, then generally speaking, Core i7s are better than Core i5s, which are in turn better than Core i3s.
Core i5. Developed and manufactured by Intel, the Core i5 is a computer processor, available as dual-core or quad-core. It can be used in both desktop and laptop computers, and is one of three types of processors in the i series (also called the Intel Core family of processors).he most common type of RAM used with a Core i5 processor is DDR3 1333 or DDR3 1600, however, higher performance RAM can be used as well (if the motherboard supports it). Power usage varies for the Core i5 processors: 1  Slower speeds (1.90 GHz to 2.30 GHz) use 11.5 W of power.