Root system in a plant develops well when __________Adeficiency of copperBabsorption of water increasesCdeficiency of auxinDdeficiency of ABAAnswer: B. absorption of water increases Read Explanation: Root system in a plant develops well when absorption of water increases. Deficiency of copper of leads to necrosis. Deficiency of auxin leads to excess differentiation of xylem. Deficiency of ABA leads to non-closure of stomata even during water stress conditions. Read more in App