AP BIOLOGY

Detailed explanation-1: -Sucrose, RFOs and polyols are transported in the sieve tubes to the sink organs in the transport phloem.

Detailed explanation-2: -Phloem are tissues that look like tubes. They transport sugars throughout the plant and supply it to tissues like roots, flowers and fruits that depend on this sugar to grow. Think of them like the veins in our body that move blood. Moving sugars from cells in the leaves to cells in the phloem is difficult for plants.

Detailed explanation-3: -Phloem: Active transport of sucrose from source cells into phloem sieve tube elements (energy required)

Detailed explanation-4: -Phloem, also called bast, is a vascular tissue that runs through all the organs of plants. It transports sugars formed in the leaves during photosynthesis.

Detailed explanation-5: -The sugars, synthesised in leaves (as a result of photosynthesis) are translocated downwards, upwards and laterally to all the other organs including storage organs mainly through phloem. These sugars are translocated in the form of sucrose.