Answer :
Leaf veins are made up of xylem and phloem, are continuous with vascular bundles in the stem and roots, and are finely branched to be in close contact with photosynthesizing cells.
Vascular bundles
A vascular bundle is a part of the transport system in vascular plants. The transport occurs in the stem, which comes in two varieties: xylem and phloem. Both of these tissues are found in a vascular bundle, which also contains supporting and protective tissues.
Vascular bundles transport nutrients, growth signals, amino acids, and proteins among both aerial and underground tissues.
Type of vascular bundles
A vascular bundle is a component of the vascular plant's transport system, which is composed of two tissues: xylem and phloem.
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