Scenario The North American Beaver Is a Large Rodent That Builds

question 44

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 leaves, what plant structure(s) is it ingesting?

• A)mesophyll, but not parenchyma nor cork
• B)parenchyma, but not mesophyll nor cork
• C)cork, but not mesophyll nor parenchyma
• D)mesophyll and parenchyma, but not cork

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Definitions:

Australopithecine Fossils

Prehistoric remains of hominid species, belonging to the genus Australopithecus, that are among the earliest known human ancestors.

Million Years

A period of time equal to one thousand times one thousand years, often used to denote significant periods in Earth's geological and biological history.

Hominoids

A group of primates that includes all apes and humans, characterized by their lack of a tail and more complex brains.

Toumai

A nickname for Sahelanthropus tchadensis, one of the oldest known species in the human lineage, discovered in Chad, Africa dating to about 7 million years ago.