Examlex
The __________ threshold is the smallest amount of energy needed for a person to detect the presence of a stimulus 50% of the time.
Endodermis
The endodermis is the innermost layer of cells in the root cortex of plants, serving as a selective barrier that regulates the flow of water and nutrients from the soil into the vascular system.
Vascular Cylinder
The central part of a root or stem containing the plant's vascular tissue, including xylem and phloem, responsible for water and nutrient transport.
Cortex
The outer layer of an organ or structure, such as the cerebral cortex of the brain or the cortex of the kidney.
Epidermis
The outer layer of cells covering an organism, particularly the surface layer of skin.
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