Examlex
What molecule contributes at least two nitrogen atoms to each purine?
Companion Cell
Plant cell in the vascular tissue of plants that metabolically supports the conducting cells of the phloem.
Sieve-Tube Member
A type of elongated cell in the phloem of flowering plants, responsible for transporting sugars and other nutrients.
Sieve-Tube Members
Specialized cells in the phloem of higher plants that facilitate the transport of sugars and other nutrients from the leaves to the rest of the plant.
Parenchyma
A type of tissue in plants composed of living cells, often involved in photosynthesis, storage, and healing.
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