What Evidence and Characteristics Do Scientists Use to Place Animals

question 71

Essay

What evidence and characteristics do scientists use to place animals, such as humans, in a particular classification, such as a kingdom, order, or family?

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Definitions:

Anastomosis

The surgical connection between two structures, typically blood vessels or other tubular organs.

Cerebral Arterial Circle

Also known as the Circle of Willis, it is a circulatory anastomosis that supplies blood to the brain and surrounding structures.

Oxygenated Blood

Blood rich in oxygen, typically flowing from the lungs to the heart and then to the rest of the body.

Hepatic Portal Vein

A blood vessel that carries blood from the gastrointestinal tract, gallbladder, pancreas, and spleen to the liver.