Which of the following is true regarding loading and unloading in phloem translocation?
A) Loading refers mainly to transfer of water, whereas unloading refers to the transfer of sucrose.
B) Both require energy.
C) Loading involves the transfer of phloem to the leaves, whereas unloading refers to the transfer of the products of photosynthesis to the roots.
D) Loading requires active transport, whereas unloading requires only passive transport.
E) Loading is associated with sinks, whereas unloading is associated with sources.
Correct Answer:
Verified
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