Scenario The North American Beaver Is a Large Rodent That Builds

question 9

Multiple Choice

Scenario
The North American beaver is a large rodent that builds dams to convert freshwater streams into ponds. Beavers build their dams out of trees, which they cut down using their front teeth. Beavers also eat the leaves and bark of trees, as well as the starchy roots of water lilies.
-As a beaver chews from the outside to the inside of a tree, in what order does it encounter plant tissues?

• A)secondary xylem ⇒ secondary phloem ⇒ cork ⇒ cork cambium ⇒ vascular cambium
• B)cork cambium ⇒ cork ⇒ secondary xylem ⇒ vascular cambium ⇒ secondary phloem
• C)cork ⇒ cork cambium ⇒ vascular cambium ⇒ secondary xylem ⇒ secondary phloem
• D)cork ⇒ cork cambium ⇒ secondary phloem ⇒ vascular cambium ⇒ secondary xylem

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