Movement of Soluble Organic Material Through Sieve Tube Members Occurs

Question

Movement of soluble organic material through sieve tube members occurs through ____.  
A) translocation
B) active transport
C) cohesion-tension
D) transpiration
E) facilitated transport

Accepted Answer

The movement of soluble organic material through sieve tube members is a process known as translocation, which is driven by pressure gradients from source to sink. This process is essential for the distribution of nutrients and energy throughout the plant. Active transport, facilitated transport, and cohesion-tension are all mechanisms involved in the movement of water and nutrients in plants, but they do not specifically refer to the translocation of soluble organic material through sieve tubes. Transpiration is the process of water loss from the leaves due to evaporation, and is not directly involved in the movement of organic material.