What happens in the Phloem
A.water Moves up from roots
B.food moves down from leaves
C.food moves up from roots
D.water moves down to roots
It is B
You can thank me later
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Your friend is right
The correct answer is B. Food moves down from leaves.
To understand why food moves down from leaves in the phloem, we need to have a basic understanding of the process of photosynthesis.
Photosynthesis is the process by which plants synthesize carbohydrates (food) using light energy, carbon dioxide, and water. It predominantly takes place in the leaves of plants. During photosynthesis, glucose (a type of sugar) is produced as a result.
The phloem is a specialized tissue in plants responsible for the transport of sugars, also known as sucrose, from the leaves to other parts of the plant, such as the roots, stems, and developing fruits. This transport occurs through a process called translocation.
When photosynthesis occurs in the leaves, glucose is synthesized. This glucose is then converted into sucrose, which is more suitable for transport. The sucrose is loaded into the phloem tissue through a process called active transport.
Since the sucrose concentration is higher in the leaves compared to the roots, there is a pressure difference created within the phloem. This pressure gradient forces the sucrose to move from the source (leaves) towards the sinks (other parts of the plant requiring nutrition). In other words, the food (sucrose) moves down from the leaves to other parts of the plant, such as the roots, stems, or developing fruits.
In summary, the main function of the phloem is to transport food (sucrose) from the leaves, where it is produced during photosynthesis, to other parts of the plant that require nutrients.