Which of the following statements about transport through phloem is true?

Question

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The direction of flow in the phloem can change depending on the needs of the plant. This is because the phloem transports sugars and other organic compounds from sources (sites of production) to sinks (sites of storage or utilization). For example, during the day, leaves are sources and roots are sinks, so the phloem transports sugars from leaves to roots. During the night, roots become sources and shoots become sinks, so the direction of flow is reversed. This requires energy from the plant. Root pressure is involved in the transport of water and minerals, not the transport of sugars through the phloem. Starch is not transported, but instead, mostly soluble sugars such as sucrose are transported in the phloem.

Which of the Following Statements About Transport Through Phloem Is