Scenario The North American Beaver Is a Large Rodent That Builds

question 43

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.
-When a beaver is eating bark, what plant structures is it ingesting?

• A)secondary phloem, cork cambium, and cork
• B)secondary xylem, secondary phloem, and cork cambium
• C)primary phloem, cortex, and endodermis
• D)primary xylem, vascular cambium, and primary phloem

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