Among desert plants, there are plants that absorb water all year round, and plants that absorb water only in the wet season

Among desert plants, there are plants that absorb water all year round, and plants that absorb water only in the wet season. What features of the structure and physiology should the plants of each of these groups have?

1) Plants that absorb water only during the wet season should have storage organs and devices that save water. An example is cacti with their stems, needle leaves, wax coating on the leaves.
2) Plants that absorb water all year round should have long roots and adaptations for economical evaporation of water. Example: saxaul, a camel thorn with their small leaves and roots deep in the soil.