It is absent in secondary cell wall.
Correct answer: B. Pectin
- A. Silica
- B. Pectin
- C. Waxes
- D. Cutin
Explanation
All are present in the secondary cell wall except pectin, as it is a component of the primary cell wall.
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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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