Question

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

Explanation:

Ribosomes are involved in protein - synthesis and are present in plant cells. Chloroplasts are responsible for photosynthesis and are abundant in leaf cells. Mitochondria are the power - houses of the cell and are present in plant cells. Centrioles are mainly found in animal cells and are absent in most plant cells including leaf cells.

Answer:

C. centrioles