Answer:
Option-D
Explanation:
Plasmodesmata are the plasma membrane lined pores present in the cells of the plants. Inside these pores runs a closed tubelike structure which is an extension of the endoplasmic reticulum.
The plasmodesmata allows cell to cell communication which involves symplast mode of transport that is through its cytoplasm.
The small water soluble molecules like amino acid and sugars can easily pass through these plasmodesmata via diffusion. The large molecules can be transported through these plamodesmata through selective diffusion.
Thus, Option-D is the correct answer.
An explanation of how plant cells communicate across cell walls will most likely refer to the diffusion through plasmodesmata is Small, water-soluble molecules.
Small water soluble molecules often cross the membrane through the process of Diffusion. It is known as passive transport due to the fact that no external energy is used.
Polar molecules, such as water and small water-soluble molecules example urea, chloride ions, sodium ions etc. often
diffuse across membranes through the water-filled channels formed by membrane proteins.
Plasmodesmata are refered to ad connections through which cells communicate chemically with one another via their thick walls.
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