Question

How might roots react when they encounter a region of the soil that is low in nitrates?

A. branch extensively so as to maximize the ability to absorb whatever nitrates are available
B. produce additional root hairs to facilitate nitrate absorption
C. increase mycorrhizal associations so as to increase nitrate absorption
D. produce additional proteins for transporting and assimilating the available nitrates
E. minimize branching

Answer 1

When roots encounter a region of low nitrate soil, they may branch extensively, produce additional root hairs, increase mycorrhizal associations, or produce additional proteins for transporting and assimilating nitrates. Therefore, the most appropriate correct option is D.

Step-by-step explanation:

When roots encounter a region of soil that is low in nitrates, they may react in several ways. One possibility is that they may branch extensively to maximize the ability to absorb whatever nitrates are available. Another possibility is that they may produce additional root hairs to facilitate nitrate absorption. Additionally, roots may increase mycorrhizal associations to increase nitrate absorption. Meanwhile, they may also produce additional proteins for transporting and assimilating the available nitrates.