Question

Explain the structure and function of plasmodesmata with help of diagram?

Answer 1

Hint: Plasmodesmata are the bridge of cytoplasm between every living cell. Plasmodesmata progress individualistic in various lineages, and species include members of the Charophyceae, Charales, Coleochaetales and Phaeophyceae (algae), embryophytes (plants)

Complete answer:
Plasmodesmata are cytoplasmic bridges which develop in the pores of their cell walls.
Two kinds of plasmodesmata are present: primary plasmodesmata (formed during cell division) and secondary plasmodesmata (form between mature cells).
Primary plasmodesmata formation occurs when fractions of the endoplasmic reticulum are treed across the middle lamella as a new cytomembrane is synthesized between two newly divided plant cells. These eventually become the protoplasmic connections between cells. At the formation site, the wall is not thickened further, and depressions or thin areas are understood as pits which are formed in the walls. Pits ordinarily combine between adjacent cells.Plasmodesmatafit into existing cell walls between non-dividing cells are secondary plasmodesmata.
Correct answer:
Function: Intercellular communication, transport protein, and transport molecules between near plants.
Structure:
They are made up of a protoplasmic continuum called symplast.
Apoplasm:A non-living component of the plant body formed by cell wall and intercellular spaces called apoplasm.
Diameter of plasmodesmata is 40-50 nm and it issimple, branched and roughly cylindrical.
There is space between the desmotubule and plasma membrane which contains 8-10 microchannels.

Note: Plasmodesmata form channels for controlled passage of small-sized particles between adjacent cells as well as the transfer of some specific signals. Plasma membrane lines the plasmodesmata and encloses tubular extension of the endoplasmic reticulum known as desmotubule.