Water pathways question

• What are the three pathways through which water can move in the cortex?

  Apoplast, symplast, and vacuolar pathways
• How does the apoplast pathway function in water movement?

  It moves water along the cell walls
• What is the role of the symplast pathway in water movement?

  It moves water through the cytoplasm and plasmodesmata
• What does the vacuolar pathway involve in water movement?

  It involves moving water through the tonoplast
• What type of movement do these pathways represent?

  Passive movement down a water potential gradient
• What is the Casparian strip's function in water movement?

  It blocks water in the apoplast pathway
• What happens to water once it reaches the endodermis?

  It is forced into the symplast pathway
• How are minerals and ions transported into the xylem?

  They are actively transported, lowering water potential
• What effect does water-logged soil have on plants?

  It reduces oxygen for aerobic respiration
• Why is oxygen important for plants in water-logged soil?

  It is required for aerobic respiration to produce ATP
• What is the consequence of less oxygen in water-logged soil?

  Less minerals and ions move in by active transport
• How does reduced mineral and ion transport affect water entry?

  It leads to less water entering the roots
• What happens to root pressure when less water enters?

  It lowers root pressure