Examlex
A research procedure in which a variable is manipulated and the manipulation's effect on another variable is observed is called a(n) :
Cortex
The outer layer of various organs or structures, such as the brain's cerebral cortex, involved in high-level functions including consciousness, memory, and thought, or the kidney's cortex, involved in filtration and blood processing.
Tracheids
Water-conducting cells in the xylem of vascular plants that are elongated, with thickened cell walls and tapered ends, contributing to the support and transportation of water and minerals.
Vessel Elements
Shorter, wider plant cells than tracheids, found in the xylem, which efficiently transport water and nutrients vertically through the plant.
Perforation Plates
Structures found in the vessel elements of some plants, allowing for the flow of water and nutrients between cells.
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