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

In plant cells, such as those found in leaves, ribosomes and mitochondria are indeed present, as these organelles are crucial for protein synthesis and energy production, respectively. However, leaf cells are rich in chloroplasts, which are responsible for photosynthesis. The one organelle that is typically absent in most plant cells, including those from leaves, is centrioles. These structures are primarily found in animal cells and are involved in cell division. When examining leaf cells, one fascinating detail is that the chloroplasts can change position within the cell based on light availability—a process known as phototaxis. This allows the cells to optimize photosynthesis by adjusting their exposure to sunlight. So, while centrioles might take a day off in plant kingdom, chloroplasts are definitely on the job!