Girdling a tree involves cutting a deep groove all the way around a tree trunk; it would have the effect of
A)triggering additional auxin production and increasing leaf growth.
B)increasing the input of carbon dioxide and increasing photosynthesis.
C)interrupting the flow of minerals and stunting the growth of the tree.
D)interrupting the passage of phloem sap and killing the tree.
E)interrupting the passage of water and killing the tree.

Question

Quizplus · Accepted Answer

Girdling a tree interrupts the passage of phloem sap, which carries sugars and other nutrients from the leaves to other parts of the tree. This can eventually lead to the death of the tree. It does not affect auxin production, photosynthesis, or water flow, and it only stunts growth indirectly by cutting off nutrient supplies.

Girdling a Tree Involves Cutting a Deep Groove All the Way