In which of the following all are poly-saccharides ?

Options

A. Glycogen, sucrose and maltose
B. Sucrose, glucose and fructose
C. Maltose , lactose and fructose
D. Glycogen, cellulose and starch.

Answer

To determine which of the given options contains only polysaccharides, we will analyze each option step by step.

### Step 1: Analyze Option A - Glycogen, Sucrose, and Maltose
- **Glycogen**: This is a polysaccharide made up of glucose subunits linked by alpha 1,4 and alpha 1,6 glycosidic bonds. **(Polysaccharide)**
- **Sucrose**: This is a disaccharide composed of glucose and fructose linked by a glycosidic bond. **(Not a polysaccharide)**
- **Maltose**: This is also a disaccharide formed from two glucose units. **(Not a polysaccharide)**

**Conclusion**: This option is incorrect because it contains disaccharides.

### Step 2: Analyze Option B - Sucrose, Glucose, and Fructose
- **Sucrose**: As mentioned, this is a disaccharide. **(Not a polysaccharide)**
- **Glucose**: This is a monosaccharide. **(Not a polysaccharide)**
- **Fructose**: This is also a monosaccharide. **(Not a polysaccharide)**

**Conclusion**: This option is incorrect because none are polysaccharides.

### Step 3: Analyze Option C - Maltose, Lactose, and Fructose
- **Maltose**: This is a disaccharide. **(Not a polysaccharide)**
- **Lactose**: This is also a disaccharide formed from glucose and galactose. **(Not a polysaccharide)**
- **Fructose**: Again, this is a monosaccharide. **(Not a polysaccharide)**

**Conclusion**: This option is incorrect because none are polysaccharides.

### Step 4: Analyze Option D - Glycogen, Cellulose, and Starch
- **Glycogen**: This is a polysaccharide made of glucose units. **(Polysaccharide)**
- **Cellulose**: This is also a polysaccharide found in plant cell walls, made of glucose units linked by beta 1,4 glycosidic bonds. **(Polysaccharide)**
- **Starch**: This is a polysaccharide used for energy storage in plants, composed of amylose and amylopectin (both made from glucose units). **(Polysaccharide)**

**Conclusion**: This option is correct because all three are polysaccharides.

### Final Answer:
The correct option where all are polysaccharides is **Option D: Glycogen, Cellulose, and Starch**.

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