Plasmodesmata are
- A. pores in the nuclear envelope
- B. the enzymes that digest the cell wall
- C. protein channels in the plasma membrane of animal cells
- D. cytoplasmic strands passing through the walls and connecting adjacent plant cells
Explanation
These fine channels of cytoplasm run through pits in the cell walls and join neighbouring plant cells into one continuous system, so water, ions and small molecules can move from cell to cell without crossing the wall. That route is called the symplast pathway. The equivalent connections in animal tissues are gap junctions.
Related questions
The fluid mosaic model describes the plasma membrane as
The statement that all cells arise from pre-existing cells was added to the cell theory by
The large central vacuole of a mature plant cell is bounded by a membrane called the
Which structure is normally absent from the cells of higher plants?
Active transport differs from facilitated diffusion in that active transport