Artichoke hearts are tender and have a strong taste. The leaves have a strong taste, too, but most of an artichoke leaf is fibrous and too difficult to chew. The leaves must contain lots of __________.

• A. collenchyma cells
• B. phloem
• C. meristematic tissue
• D. epidermal cells
• E. sclerenchyma cells

Answer: (E)

Verified step by step guidance

1. Understand the structure and function of sclerenchyma cells: Sclerenchyma cells are a type of plant cell known for their thick, lignified cell walls, which provide structural support and strength to the plant.
2. Consider the characteristics of artichoke leaves: The problem states that artichoke leaves are fibrous and difficult to chew, indicating they have a tough structure.
3. Relate the characteristics of sclerenchyma cells to the description of artichoke leaves: The fibrous and tough nature of the leaves suggests the presence of cells that provide rigidity and support, which is a key function of sclerenchyma cells.
4. Eliminate other options based on their functions: Collenchyma cells provide flexible support, phloem is involved in transport of nutrients, meristematic tissue is involved in growth, and epidermal cells form the outer layer of the plant. None of these match the description of fibrous and tough.
5. Conclude that the fibrous nature of the artichoke leaves is due to the presence of sclerenchyma cells, which are known for their role in providing structural support and making plant parts tough and fibrous.