Question

Write the main difference between auxins and cytokinins.

Answer 1

In root branching both auxin and cytokinins are important and also play a key role.

Auxin stimulates root branching.
Cytokinin inhibits root branching and lateral root formation.
There are five types of plant hormones which are major. Those hormones are:
auxin
gibberellin
cytokinin
ethylene
abscisic acid

Complete answer:
Here are the main difference between cytokinins and auxins are as mentioned below:

Auxins	Cytokinins
In the stem tip, the auxins are produced.	In the roots, cytokinin is produced and the cytokinins in xylem sap travel upward.
Cell elongation is promoted by auxins.	Cell division in roots and the shoots of plant and ageing and enlargements are promoted by cytokinins.
In Phototropism, hydrotropism and geotropism auxins have a major role.	Lateral bud growth is signaled by the movements of cytokinins from roots into shoots.
F.W.went introduced the auxins.	Miller and Skoog isolated cytokinin for the first time.
In the shoot apex and leaf primordial, the auxins are produced.	In fruits and roots, in the embryo of seeds and endosperm cytokinins are found.
The growth of apical bud is promoted by auxins.	Lateral bud growth is promoted by cytokinins.

Note:
Cytokinin alone really does not affect parenchyma cells, which is fairly significant. In a very major way. More cytokinin induces the growth of definitely shoot buds, while more auxin induces root formation in a really big way. Cytokinins are involved actually in many plant processes, including cell division and generally shoot and root morphogenesis, so sort of more cytokinin induces growth of specifically shooting buds, while more auxin induces root formation, actually contrary to popular belief.