Secondary cell wall of sclerenchyma cells is impregnated with?
Correct answer: B. Lignin
- A. Cellulose
- B. Lignin
- C. Murein
- D. Pectin
Explanation
Sclerenchyma cells have thick secondary cell walls usually impregnated with lignin, an organic substance that makes the walls tough and hard.
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About Support and Movement
Support and movement covers the axial and appendicular skeleton, bone structure, joints and the arrangement of skeletal muscles. Muscle contraction is explained through actin, myosin, sliding filaments, calcium ions and ATP, while arthritis is distinguished as a disorder of joints rather than a normal part of movement.
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