Examlex
Which of the following is an adaptation shared by virtually all complex multicellular organisms that allows the organisms to receive the oxygen and nutrients they need?
Immune System
The complex network of cells, tissues, and organs in the body that work together to defend against infection, disease, and foreign substances.
Specialized Cells
Cells that have developed unique functions and structures to perform specific tasks within an organism.
Foreign Invaders
Pathogenic organisms or substances from outside the body that can cause disease or immune responses when they enter the body.
Fungi
A kingdom of spore-producing organisms feeding on organic matter, including molds, yeast, mushrooms, and toadstools.
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