Question

In plants, insulin and pectin are:
A. Reserve material
B. Waste
C. Excretory material
D. Insect-attracting material

Answer 1

Hint: For a long time, Inulin has been well known. In at least ten families of taller plants, these carbohydrates are synthesised. They can be found in various plants of economic significance, such as onions , garlic, barley, rye , and wheat. Pectin is one of the primary components of the cell wall involved in temporal and spatial growth process control.

Complete Answer:

> Insulins are an essential component of many of our traditional foodstuffs and have been eaten for longer than we can remember as such ingredients. With one terminal glucose molecule, insulin is made up of 2-60 fructose units. Inulin belongs to the polysaccharide fructose group and acts as a storage for carbohydrates in many types of plants. Compounds such as inulin minimise the energy density of food and are used to enrich or substitute sugar and fat with dietary fibre foods.
> Plant cells are differentiated from animal cells by the presence of a polysaccharides’ cell wall and are responsible for fundamental mechanistic discrepancies between the two kingdoms in organ formation. Plant cells are incapable of crawling and contracting due to the presence of this wall. Pectin is one of the principal components of the cell wall involved in the growth process's temporal and spatial regulation Via biochemical changes in the composition of pectin and biochemical structure, it is possible to adjust the properties of this material to cause particular developmental processes. Here, the functions of pectin in three rapidly growing systems are the root elongation zone, the pollen tube tip area and the formation of organ primordia at the shoot apical meristem. Inulin is a heterogeneous fructose polymer occurring in the form of storage in the roots and tubers of the Compositae family. Pectin is a mucopolysaccharide and is a major component of the walls of plant cells. Pectin hydrolysis contributes to the softening of tissues during fruit ripening. Therefore, Inulin and Pectin are backup materials contained in plants.

Hence, the correct answer is (a) Reserve material. 

Note: Inulin, a fructose polymer, is used in food stores , especially in the roots and tubers of the Compositae family. Pectin is a mucopolysaccharide that can be contained in plant cell walls. The pectin becomes hydrolyzed during the time of food ripening and gives rise to the sugar constituents.