Because plants can't search out sources of water, Madison wonders what special adaptations they must have for storing water. In plants, this is reflected in the larger size of what organelle?

It is reflected in the larger size of VACUOLE

Explanation:

Plants have larger VACUOLE compare to animals because VACUOLE is an organelle present in plants that help plants store water and other materials.

Even plants stop growing, the VACUOLE serve as storage units that stores large volume of water and food. These special adaptations in plants enable them store water in VACUOLE organelle which is use for metabolic processes in the plant cells.

yes it is weird but true