Apoplast Pathway in Plant Roots Steps:

• Recall apoplast pathway: water travels through cell walls and intercellular spaces, bypassing cytoplasm.
• Evaluate statement 1: entering cell walls aligns with apoplast entry from soil.
• Evaluate statement 4: movement through cell walls matches continuous apoplast flow to xylem.
• Eliminate statements 2 and 3: osmosis into cytoplasm and plasmodesmata describe symplast pathway.

Why B is correct:

• Apoplast is defined as the extracellular pathway via cell walls, directly matching statements 1 and 4.

Why the others are wrong:

• A includes symplast elements (2 and 3), which enter living cells.
• C describes only symplast (cytoplasm and plasmodesmata connections).
• D omits initial entry (1), incomplete for full apoplast description.

Final answer: B