The phloem transports products of photosynthesis, such as sugars and other organic molecules, from the leaves where they are synthesized to other parts of the plant.
Share
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
The phloem transports products of photosynthesis, such as sugars and other organic molecules, from the leaves where they are synthesized to other parts of the plant.
The phloem primarily transports organic compounds, mainly sugars produced during photosynthesis, throughout the plant. This bidirectional transport system ensures the distribution of assimilates from source tissues (such as leaves) to sink tissues (such as roots, developing fruits, and growing buds). The main transported sugars are sucrose, glucose, and fructose. Phloem sap also contains amino acids, hormones, and other metabolic products. Sieve tubes, along with companion cells, form the phloem structure, allowing for efficient translocation of these substances. This process is vital for supplying energy, nutrients, and signaling molecules to different parts of the plant, supporting growth, development, and metabolic activities.
The phloem primarily transports organic nutrients, including sucrose, amino acids, and other sugars essential for plant growth and metabolism. Additionally, it carries hormones like auxins, cytokinins, and gibberellins, regulating various physiological processes. While its main role is in distributing organic compounds, the phloem can also transport small amounts of inorganic nutrients and minerals. Overall, the phloem facilitates the systemic distribution of nutrients and signaling molecules, vital for plant growth, development, and response to environmental stimuli.