Plasmodesmata (singular form: plasmodesma) are intercellular organelles found only in plant and algal cells. (The animal cell "equivalent" is called the gap junction.) The plasmodesmata consist of pores, or channels, lying between individual plant cells, and connect the symplastic space in the plant.

Do xylem have plasmodesmata?

Absence of plasmodesmata from the membranes of vessel elements and tracheids indicates that their pits develop independently of these structures. ... These observations are discussed with regard to the role of plasmodesmata in pit formation, and in the differentiation of the various cell types in secondary xylem.

Is plasmodesmata in plant or animal cells?

Intercellular Junctions

There are some differences in the ways that plant and animal cells communicate directly. Plasmodesmata are junctions between plant cells, whereas animal cell contacts are carried out through tight junctions, gap junctions, and desmosomes.