Which structure is found in plant cells but not in animal cells?

• A. Cell wall composed primarily of cellulose
• B. Plasma membrane
• C. Mitochondria
• D. Ribosomes

Answer: (A)

Verified step by step guidance

1. Step 1: Understand the basic differences between plant and animal cells by reviewing their cellular structures and functions.
2. Step 2: Identify the structures listed in the problem: Cell wall composed primarily of cellulose, Plasma membrane, Mitochondria, and Ribosomes.
3. Step 3: Recall that both plant and animal cells have a plasma membrane, mitochondria, and ribosomes, as these are essential for cell function and energy production.
4. Step 4: Recognize that the cell wall composed primarily of cellulose is a rigid outer layer found only in plant cells, providing structural support and protection.
5. Step 5: Conclude that the unique structure found in plant cells but not in animal cells is the cell wall composed primarily of cellulose.