Which of these is the right combination of molecules which make up the secondary cell wall in plant cells?
Correct answer: B. Cellulose, hemicellulose and lignin
- A. Cellulose, lignin and xylem
- B. Cellulose, hemicellulose and lignin
- C. Cellulose only
- D. Cellulose hemicellulose and pectin
Explanation
The composition of the secondary wall includes Inorganic salts, silica waxes, lignin, cutting, hemicellulose, cellulose. •Composition of primary wall and middle lamella is as followsPrimary wall:Cellulose, pectin, and hemicelluloseMiddle lamella:It is formed of sticky gel-like magnesium and calcium salts and pectin.
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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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