The diagram shows the relationship between phloem sieve tube elements, xylem vessel elements and companion cells.Which row correctly identifies what could be represented by the numbers 1, 2, 3, 4 and 5?
1) companion cells | 2) endoplasmic reticulum | 3) phloem sieve tube elements | 4) no nucleus | 5) xylem vessel elements
2 )
1) companion cells | 2) nucleus | 3) phloem sieve tube elements | 4) cytoplasm | 5) xylem vessel elements
3 )
1) phloem sieve tube elements | 2) mitochondria | 3) companion cells | 4) nucleus | 5) xylem vessel elements
4 )
1) xylem vessel elements | 2) no cytoplasm | 3) phloem sieve tube elements | 4) vacuole | 5) companion cells
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