Question

Cell theory was formulated by

• A. Schwann and Robert Brown
• B. Schleiden and Schwann
• C. Robert Hook and Robert Brown
• D. Schleiden and Robert Brown

Answer 1

Answer: (B)

Schleiden and Schwann

Answer 2

Cellulose is a complex carbohydrate and the main component of the cell walls in plant cells, including cotton fibers. It is a linear polymer composed of glucose units linked together by beta-1,4-glycosidic bonds. The arrangement of these glucose units in cellulose gives it a rigid and fibrous structure, providing strength and stability to plant tissues.
Cotton fibers are made up of numerous cellulose chains that are tightly packed together, forming long, strong, and flexible fibers. These fibers are responsible for the desirable properties of cotton, such as its softness, absorbency, and strength.
Therefore, the correct answer is option (D) cellulose.