[Campbell Biology P.45] Which of the following statements accurately describes a difference... | Practice Question

Which of the following statements accurately describes a difference between the apoplast and symplast pathways in plant transport, as implied by the provided text?

  • A: The apoplast involves movement through plasmodesmata, while the symplast involves movement through cell walls.
  • B: The symplast involves movement through the cytoplasm and plasmodesmata, while the apoplast involves movement through cell walls and extracellular spaces.
  • C: The apoplast is used for sugar transport, while the symplast is used for water transport.
  • D: Both pathways require active transport across the plasma membrane.

Explanation

The text mentions 'The Apoplast and Symplast: Transport Continuums' under CONCEPT 36.2. In biology, the apoplast refers to the continuum of cell walls and extracellular spaces, allowing movement of water and solutes without crossing the cell membrane. The symplast refers to the continuum of cytoplasm connected by plasmodesmata, requiring substances to enter the cell cytoplasm.