Examlex
Which of the following best describes the journey of an oxygen molecule in a lung?
Epidermis
The outermost layer of skin in mammals, serving as a protective barrier against environmental damage.
Primary Xylem
The initial vascular tissue in plants that conducts water and nutrients from the roots to the rest of the plant, formed during primary growth.
Xylem
The vascular tissue in plants responsible for the conduction of water and nutrients from the roots to the rest of the plant.
Woody
Describing plant tissue that is hard and fibrous, typically found in trees and shrubs, providing structural support.
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