AP BIOLOGY

Detailed explanation-1: -Three important commercial plant gum s are gum arabic, gum tragacanth and karaya gum .

Detailed explanation-2: -Gum-resins They contain traces of essential oils. These are usually derived from the plant growing in dry and arid regions. Some of the commonly used gum-resins ale asafoetida, myrrh, salai, guggul etc.

Detailed explanation-3: -Gum and resin collection was the third most important livelihood option in the study area following animal husbandry and crop and honey production. The majority (84%) of respondents recognized the income made from gum-resin products as a safety net during recurring famine eras.

Detailed explanation-4: -Natural gums are long chains of sugars (polysaccharides) within native plant materials that are either water-soluble or capable of absorbing water. Gels are formed when these polysaccharides are mixed with water.

Detailed explanation-5: -Gums are formed by the decomposition of cellulose and plant tissues, a process called gummosis. They burn with a smoky flame, when ignited. They decompose directly without melting on heating. Used as varnishes, adhesives, food glazing agent and in incense and perfumes.