Transport in Vascular Plant

Question 1

Level of Transport across plants

Answer 1

1. uptake of water and solutes by individual cells
2. short-distance transport of solutes and water from cell to cell at the level of tissues and organs
3. long distance transport of sap by xylem and phloem at whole plant level (bulk flow)

Question 2

uptake of water and solutes by individual cells??

Answer 2

1. active transport
   - against their electrochemical gradients
2. passive transport
   - down their concentration gradient

Question 3

central role of proton pump? (uptake of water and solutes by individual cells)

Answer 3

used to pump H+ out of the cell

-contribute to membrane potential and established of pH gradient across membrane

Question 4

cotransport (uptake of water and solutes by individual cells)

Answer 4

transport protein couples the passage of one solute to the passage of another

Question 5

short-distance transport at tissue level and organs happens via:

Answer 5

• across plasma membrane through cell walls
• apoplastic route ( move along the cell walls and extracellular spaces)
• symplastic route ( move along cytosol and from cell to cell via plasmodesmata)

Question 6

2 major compartments in plant tissues?

Answer 6

1. apoplast

2. symplast