HORTICULTURE

Detailed explanation-1: -The most common naturally occurring monosaccharides are d-glucose, d-mannose, d-fructose, and d-galactose among the hexoses and d-xylose and l-arabinose among the pentoses.

Detailed explanation-2: -A similarity can be found between its stereochemistry and that of the levo or dextro enantiomer of glyceraldehyde. Levorotatory substances, such as d-fructose, are examples. Thus, all natural amino acids have the L configuration, whereas all natural carbohydrates have the D configuration.

Detailed explanation-3: -D-Glucose is the enantiomer of L-Glucose, for example. As L-Alanine is the enantiomer of D-Alanine. It is assigned as follows. For a sugar drawn in the Fischer projection with the most oxidized carbon at the top (i.e. aldehyde or ketone) if the OH on the bottom chiral centre points to the right, it is referred to as D-

Detailed explanation-4: -Most carbs occur naturally in plant-based foods, such as grains. Food manufacturers also add carbs to processed foods in the form of starch or added sugar. Common sources of naturally occurring carbohydrates include: Fruits.

Detailed explanation-5: -Almost all sugars found in nature are D-sugar. Like R and S, D and L indicate the configuration of an asymmetric carbon, but they do not indicate whether the compound rotates polarized light to the right or to the left. For example, D-glyceraldehyde is dextrorotatory, whereas D-lactic acid is levorotatory.