Question

What mechanism explains the movement of source to sink –

• A. Evaporation of water and active transport of source from sink
• B. Osmotic movement of water into the sucrose loaded sieve tube cells creating a higher hydrostatic pressure into the source than in the sink
• C. Tension created by differences in hydrostatic pressure in the source and sink
• D. Active transport of sucrose through the sieve tube membranes driven by proton pump.

Answer 1

Answer: (B)

Osmotic movement of water into the sucrose loaded sieve tube cells creating a higher hydrostatic pressure into the source than in the sink