Which of the following best describes girdling roots?

• A. Roots that grow straight down into the soil
• B. Roots that grow around the trunk
• C. Roots that spread outwards from the center
• D. Roots that attach to nearby plants

Answer: (B)

Girdling roots refer to roots that wrap around the trunk of a tree or plant, potentially compromising its health. This growth pattern occurs when roots are forced to encircle the trunk due to factors such as soil compaction, lack of space, or improper planting techniques. As these roots grow around the trunk, they can choke the tree, restrict nutrient and water flow, and ultimately lead to decline or death.

In contrast, roots that grow straight down into the soil typically indicate a healthy root system, which allows for deep anchorage and proper nutrient absorption. Roots that spread outward from the center are common in many tree species and contribute to stability and resource gathering without compromising the trunk. Meanwhile, roots that attach to nearby plants are related to specialized growth strategies like those in vines or certain parasitic plants, which is unrelated to the concept of girdling roots.