In general, which structure is found in animal cells but not in plant cells?

• A. Chloroplasts for photosynthesis
• B. A cell wall composed primarily of cellulose
• C. Centrioles (in centrosomes), which help organize the mitotic spindle
• D. A large central vacuole that maintains turgor pressure

Answer: (C)

Verified step by step guidance

1. Review the key structural differences between animal and plant cells, focusing on organelles unique to each type.
2. Recall that chloroplasts and a large central vacuole are characteristic of plant cells, not animal cells.
3. Understand that plant cells have a rigid cell wall made primarily of cellulose, which animal cells lack.
4. Identify centrioles, which are cylindrical structures found in the centrosomes of animal cells and play a role in organizing the mitotic spindle during cell division.
5. Conclude that centrioles are present in animal cells but absent in plant cells, making them the correct answer.