Which description states some of the features of xylem vessels?
1 )
cells joined to form a tube, pits at intervals, sieve plates between cells, surrounded by the endodermis in roots
2 )
contains cells joined end to end, containing peripheral cytoplasm, cell walls with secondary thickening of lignin, located to the outside of phloem in vascular bundles
contains elongated cells with end walls broken down, located in vascular bundles in the stem and centrally in the roots
4 )
dead elongated cells, lignified cell walls with pits at intervals, associated with companion cells in the roots only
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