The ports on your router are already switch ports. If they weren't, they'd have IP addresses associated with them. DHCP has nothing to do with routers or router functionality, it is included as an added feature. You can turn it off and the device is still a router.
The plant root system constitutes the major part of the plant body, both in terms of function and bulk. In terrestrial plants, the root system is the subterranean or underground part of the plant body while the shoot is the aboveground part. Roots are branching organs which grow downward into the soil, a manifestation of geotropism. Branching occurs irregularly and not from nodes as in stems.
External Parts of a Stem. Just like the human body, plants have body parts, too. This lesson will focus on one complex body part of a plant, the stem. The stem is an above-ground part of a plant that provides structural support and connects the root system to the leaves. Stems vary in size, ranging from a small vine to the 30 foot diameter of a tree!