17. Regarding plant cell walls and supporting tissues, which of the following statements is correct?
(A) Sclerenchyma usually contains living protoplasts at maturity.
(B) Collenchyma has unevenly thickened primary cell walls, providing flexible support for growing organs.
(C) Lignin primarily accumulates in the primary cell wall of plants.
(D) Fibers are considered a type of collenchyma.
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統計: 尚無統計資料
統計: 尚無統計資料