NEET BIOLOGY

Detailed explanation-1: -Photosynthesis produces glucose in the green parts of plants, which are often leaves. This is then converted into sucrose. The sucrose is transported around the plant in phloem vessels.

Detailed explanation-2: -Organic molecules such as sucrose and amino acids move from a source to a sink via phloem tubes in plants. The phloem is composed of living tissue called sieve tube members (lack a nucleus) that are joined end to end to form a tube that conducts food materials throughout the plant.

Detailed explanation-3: -Nutrients are translocated in the phloem as solutes in a solution called phloem sap. The predominant nutrients translocated are sugars, amino acids, and minerals, with sugar being the most concentrated solute in the phloem sap.

Detailed explanation-4: -Plants convert the sugars made during photosynthesis into sucrose by combining glucose with another sugar called fructose. Sucrose is translocated rather than glucose because sucrose is a nonreducing sugar.