Correct option is A
The correct answer is (a) Amylum.
• Amylum is another name for starch, specifically referring to the polysaccharide chains made up of glucose monomers that are stored in plants like corn, potatoes, wheat, and rice.
• It is a polysaccharide made up of glucose units and serves as a primary energy source for plants and animals.
• Xanthan is a type of polysaccharide produced by bacteria, not plants. It's used as a thickener and stabilizer in food and industrial applications.
• Olestra is a synthetic fat substitute used in some processed foods.
• Saponins are a group of glycosides found in plants with soapy properties.