The organelle that is large in a plant cell but small or absent in an animal cell is the vacuole.

Here's why:

* Plant Vacuoles: Plant cells often have a single, large central vacuole that takes up most of the cell's volume. This vacuole plays crucial roles in:

* Storage: It stores water, nutrients, pigments, and waste products.

* Turgor Pressure: It helps maintain the cell's shape and rigidity by pushing against the cell wall.

* Growth: As the vacuole fills with water, it expands and contributes to the growth of the plant.

* Animal Vacuoles: Animal cells may have smaller vacuoles, sometimes referred to as "vesicles," which are involved in various cellular processes like transport and digestion. However, they don't have the same large, central vacuole that dominates plant cells.