A vascular bundle is a part of the transport system in vascular plants. It is a strand of conducting vessels in the stem or leaves of a plant, typically with phloem on the outside and xylem on the inside.
Collenchyma:is a plant cell which has cell walls that range from thin to thick, providing support while still allowing the plant to grow.
Chlorenchyma:Sometimes parenchyma cells contain chloroplast, these type of parenchyma cells are known as chlorenchyma. They perform photosynthesis in plants.