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9. Structural difference between simple and complex permanent tissues

Choose the best answer:

1. The primary function of sclerenchyma is to

Exchange of gases
Conduct the food and minerals
Flexibility to the plant
Provide hardness and stiffness to the plant

2. Cell walls of this tissue are uniformly thickened due to the presence of lignin

Aerenchyma
Parenchyma
Sclerenchyma
Collenchyma

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