Cellulose is the major component of?
Correct answer: D. Both A and B
- A. Primary wall
- B. Secondary wall
- C. Middle lamella
- D. Both A and B
Explanation
Cellulose gives strength and rigidity to the cell. It makes the wall of plant cells.a) Primary wall - It is composed of the polysaccharides cellulose, hemicelluloses and pectin.b) Secondary wall - The main components of secondary walls are cellulose, xylan, glucomannan and lignin. However, secondary cell wall contains more cellulose than primary cell wall.c) Middle lamella - It is mainly composed of pectins.
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Animal, plant, prokaryotic and eukaryotic cells are compared through their membranes, cell walls, nuclei and cytoplasmic organelles. The work includes the structures and functions of mitochondria, chloroplasts, ribosomes, endoplasmic reticulum, Golgi apparatus and lysosomes, as well as chromosome organization and the distinction between chromatin and chromosomes.
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