NEET BIOLOGY

Detailed explanation-1: -The location where the assimilates (the products of photosynthesis) are produced is called the source. During translocation, the assimilates are moved to a location called the sink. The main sources of assimilates are the leaves and stem, which have cells with many chloroplasts for photosynthesis.

Detailed explanation-2: -Translocation is the movement of materials from leaves to other tissues throughout the plant. Plants produce carbohydrates (sugars) in their leaves by photosynthesis, but nonphotosynthetic parts of the plant also require carbohydrates and other organic and nonorganic materials.

Detailed explanation-3: -Sources are the structures that produce photosynthates for the growing plant. The sugars produced in the sources, such as leaves, must be delivered to growing parts of the plant. These sugars are transported through the plant via the phloem in a process called translocation.

Detailed explanation-4: -In plants, sucrose is transported over long distance in solution in the phloem sap. This flow of sap occurs in a specialised network of cells, called the sieve elements.

Detailed explanation-5: -The vascular tissue, phloem helps in the transportation of the synthesized food from the leaves to various storage organs. Phloem is a complex permanent tissue that is present in all vascular plants.