In which organelle does dna replication take place in order for new cells to have a copy of dna? why is dna important? 17. name the 2 structures that are found in animal cells and not found in plant cells _ and _?

Ivan is looking at a cross section of a stem taken from a vascular plant. he sees two different types of vascular tissue: the xylem, which is closer to the center of the stem, and the phloem, located around the xylem, closer to the outside of the stem. how do these two structures work together in a living plant?