Explain the mechanism of food translocation by the theory of pressure flow mechanism.
The pressure flow mechanism, also known as the mass flow hypothesis, describes the process by which food (mainly sucrose) is transported through the phloem from source tissues (e.g., leaves) to sink tissues (e.g., roots, fruits, and flowers). At the source, sucrose is actively transported into the sieve tubes of the phloem, which lowers the water … Read more