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A(n) ________ is a diagram in which blocks represent each trophic level.
Tracheids
Long, thin cells in the xylem of vascular plants that help in the transport of water and minerals, and also provide support.
Pits
Small depressions or cavities on a surface or in a structure, often found in fruits or in the landscape.
Perforation Plates
Structures found in the water-conducting vessels of some plants, containing large pores that allow water to flow from one vessel element to another.
Sieve Plates
Specialized structures found in the phloem of plants that facilitate the flow of nutrients by containing pores through which sap can flow between cells.
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