<u>Roots</u>: Protostele formed by xylem, cambium, and phloem. There is no medulla. Pericycle, endodermis, and Caspary band surrounds the protostele.
<u>Shoots</u>: Eustele formed by all the vascular bundles that surround the medulla. Each bundle is composed of xylem, cambium, and phloem.
Explanation:
The vascular and fundamental tissues of shoots normally show a more complex organization than those of the roots.
In dicots´ root, transversal cut shows a <u>protostele</u> which is a <em>solid vascular cylinder surrounded by cortex</em>. The <em>xylem is in the center</em> of the protostele, <em>surrounded by phloem</em>. There are xylem lobules that extend between phloem. Two cell layers are surrounding the protostele, called pericycle and endodermis. Next to the endodermis, there is the Caspary Band, composed of <em>suberin and lignin</em>.
In dicots´ shoots, the vascular system forms independent vascular bundles composed of xylem and phloem. In each bundle, <em>xylem is facing to the center of the shoot, and phloem is facing the exterior</em> of the shoot. All the vascular bundles form a circle around the medulla which is always in the center of the shoot. This organization is known as <u>eustele</u>. The <em>cortex surrounds the vascular system</em>.
</span>Increase in distance from the equator will reduce the amount of sunlight received, which will make the area have a cooler temperature. I<span>ncrease in elevation above sea level should make the air pressure lower as there is less air above the area.</span>
The formulation of zinc that has been found somewhat effective in treating the symptoms of the common cold is the zinc gluconate. Zinc gluconate may also be used to treat and to prevent zinc deficiency. Zinc is an important mineral for growth and for the development and health of body tissues.
individual viruses don't carry translational machinery, namely, the proteins needed to read their DNA and RNA and build new viruses. They invade a cell and hijack its genetic tools to do it for them.
