Starch is .........saccharide.

Explanation

**Step-by-Step Solution:**

1. **Understanding Starch**: Starch is a type of carbohydrate that serves as an important energy storage molecule in plants. It is classified as a polysaccharide, which means it is made up of many sugar units.

2. **Components of Starch**: Starch is primarily composed of two types of molecules: amylose and amylopectin.
- **Amylose**: This is a linear polymer made up of alpha-D-glucose units connected by alpha-1,4 glycosidic linkages. It typically constitutes about 15-20% of starch.
- **Amylopectin**: This is a branched polymer that makes up about 80-85% of starch. It consists of alpha-D-glucose units linked by alpha-1,4 glycosidic linkages in the straight chains and alpha-1,6 glycosidic linkages at the branching points.

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