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Which one of the following structures between two adjacent cells is an effective transport pathway?
A
Plasmalemma
B
Plasmodesmata
C
Plastoquinones
D
Endoplasmic reticulum
Detailed Solution
The cell wall and middle lamella of adjacent plant cells are traversed by fine cytoplasmic strands called plasmodesmata.
Plasmodesmata connect the cytoplasm of neighbouring cells, so substances can move from cell to cell through them; this continuous system is the symplast (symplastic pathway).
The plasmalemma is the plasma membrane of a single cell, plastoquinone is an electron carrier of the thylakoid membrane, and the endoplasmic reticulum is an organelle within a cell.
Hence the effective transport pathway between two adjacent cells is the plasmodesmata.
Plasmodesmata connect the cytoplasm of neighbouring cells, so substances can move from cell to cell through them; this continuous system is the symplast (symplastic pathway).
The plasmalemma is the plasma membrane of a single cell, plastoquinone is an electron carrier of the thylakoid membrane, and the endoplasmic reticulum is an organelle within a cell.
Hence the effective transport pathway between two adjacent cells is the plasmodesmata.