Plants physiology exam - Assignment Example

The aforementioned function of root to shoot N signaling implies that any element that will accelerate the mechanism will be important for the growth functions of the plants. The elevation of CO2 levels in the arid areas forms one of the most important factors which usually affects the xylem flow rates. This happens because of the reliant of xylem flow rates on stomatal opening and closure. In which case, the carbon iv oxide elevation causes stomatal closure, which in turn slow down the flow rate in the xylem (Easlon & Bloom, 2013).

C4 plants are likely adapted to survive in arid type of environments because of their special ts mechanism which resists elevated levels of carbon iv oxide. The mechanism is called Kranz anatomy of the leaf whereby the bundle sheath cells helps tin decarboxylation of the CO2. These bundle sheath are found within the periphery of the vascular bundles found in the C4 plants, whereby they decarboxylate the carbon iv oxide coming from the mesophyll cells. This is different to the C3 plants which do not have the bundle sheath cells in accompaniment with the enzyme called PEP carboxylase, to help in regulating the high amounts of CO2 in the arid areas.

The C3 plants only survive on the C3 carbon fixation pathway for the purpose of converting the CO2 to a compatible organic compound. A mixture of both plants will lead to a faster growth of the C3 plants as compared to the C4 plants. When one plant community containing both plants, C3 plants are likely to utilize more of the carbon iv oxide obtained for photosynthesis as compared to the C4. This happens because the C4 plants have two pathways whereby bundle sheath pathway functions in converting CO2 to organic compounds thereby leaving less for photosynthetic process.

Intuitively, this is an efficient prototype for explaining the potential of stronger competition from the C4 plants (Easlon & Bloom,