Scientists measured the pressure in the xylem of redwood trees at different heights and found that the higher they made their measurements,the lower the pressure.They extrapolated this to a pressure of zero,and concluded that the tallest a tree could grow is 122-130 meters.The tallest known tree on Earth is 112.7 meters.What assumption were the scientists making to conclude that when pressure was zero,the plant could grow no further?

Question

Quizplus · Accepted Answer

The scientists assumed that the xylem was no longer able to transport water to the leaves at a height where the pressure was zero. Therefore, the leaves above that point would not receive any water, which would limit the tree's growth. The other options do not directly relate to the xylem pressure or the transport of water in the tree.

Scientists Measured the Pressure in the Xylem of Redwood Trees