関連ワード:
what cells make up xylem what cells make up xylem tissue what cells make up xylem and phloem what two cells make up xylem what cell types make up xylem what kind of cells make up xylem what type of cells make up xylem tissue what two cell types make up xylem phloem what two cell types make up xylem what are the cells called that make up the xylem
