Final answer:
The saguaro cactus has roots that cannot absorb much water at one time to help it survive in its hot and dry climate.
Step-by-step explanation:
The saguaro cactus lives in a very hot and dry climate with rare rainstorms. Due to these conditions, it has roots that cannot absorb much water at one time.
This adaptation helps the cactus conserve water, as it enables the roots to quickly absorb as much water as possible when there is a brief rainstorm. The stored water is then gradually utilized by the cactus as needed.
By having roots that cannot absorb much water at one time, the saguaro cactus has evolved to survive in its arid environment.
Learn more about Saguaro cactus and its adaptation to a hot and dry climate