Why do you believe you were not able to see the central vacuole

The central vacuole is too small to see by the naked eye. Heck, it it INSIDE the cell, and I bet your eyed could not see a single cell, let alone an organel inside the cell. It's just too small!

Hope this helps, i would love brainiest

Leaves specifically the gas exchange between plants and the environment. while plants undergo photosynthesis, they also partake in cellular respiration. respiration is the process that happens in the leaves of plants.