Both xylem and phloem form a continuous branched system in the whole plant body.
Both xylem and phloem form a continuous branched system in the whole plant body.
木质部和韧皮部在植物体内构成一个连续的分支系统。
Both xylem and phloem form a continuous branched system in the whole plant body.
木质部和韧皮部在植物体内构成一个连续的分支系统。