Final answer:
The specialized companion cell of the phloem connected to the palisade mesophyll cell can receive materials synthesized in photosynthesis through plasmodesmata. The correct answer is option C.
Step-by-step explanation:
Materials synthesized in photosynthesis could be sent from the mesophyll cell to the companion cell.
Companion cells are found alongside sieve-tube cells in the phloem tissue. They provide metabolic support to the sieve-tube cells and contain more ribosomes and mitochondria than the sieve-tube cells. These companion cells are connected to the adjacent mesophyll cells via plasmodesmata, which are cytoplasmic channels that allow for the movement of materials between cells.
In this case, the palisade mesophyll cell is connected to the specialized companion cell of the phloem. Through the plasmodesmata, materials synthesized in photosynthesis, such as sugars, can be sent from the mesophyll cell to the companion cell for transport and distribution within the plant.