The plant cell cytoplasm is surrounded by both cell wall and cell membrane. The specificity of transport of substances are mostly across the cell membrane, because _________________.
The plant cell cytoplasm is surrounded by both cell wall and cell membrane. The specificity of transport of substances are mostly across the cell membrane, because _________________.

Solution:

Both the cell wall and the cell membrane surround the cytoplasm of plant cells. Water and chemicals in solutions pass freely through the cell wall, but the membrane is selectively permeable.