Question

a student is examining leaf cells. which organelles are missing from the cells?
○ ribosomes
○ chloroplasts
○ centrioles
○ mitochondria

Explanation:

1. Recall the organelles in plant (leaf) cells: Plant cells (like leaf cells) have ribosomes (for protein synthesis), chloroplasts (for photosynthesis), and mitochondria (for respiration).
2. Analyze centrioles: Centrioles are typically found in animal cells and are involved in cell division. Plant cells (including leaf cells) lack centrioles.
3. Eliminate other options: Ribosomes, chloroplasts, and mitochondria are present in leaf cells, so they are not the missing organelles.

Answer:

C. centrioles