Plant symptoms such as aborted fruits, dead terminal buds, and misshapen new leaves suggest a deficiency of which micronutrient?
A) Cu B) Mn C) Fe D) B E) Zn
Question 2
Plants that are efficient at taking iron up from a calcareous soil are known to employ which of the following methods?
A) produce organic compounds that can form stable chelates with iron
B) produce reducing agents that reduce Fe3+ to Fe2+ in the rhizosphere
C) lower pH of their rhizosphere
D) all of the above
E) none of the above