Plant cells have a cell wall, plastids, such as chloroplasts which contain the green photosynthetic pigment chlorophyll in green plants, a vacuole which is an organelle(cellular subunit) that contains water allowing the plant to maintain turgidity(turgor pressure allows plants to have rigid structure when the water pushes against the vacoule containing water.) An example of turgidity/turgor pressure is soaking lettuce leaves in water to maintain its crispness. Plants have stomata in their cells, which allow leaves to let water enter and exit the cell. If you have ever felt a mist coming from a tree you are sitting under on a hot summer day, then you have felt water coming from the tree's leaves. This phenomenon is called transpiration.
