Ten Tomato Plants Are Germinated and Maintained in a Large

Multiple Choice

Ten tomato plants are germinated and maintained in a large tray with no drainage. After several weeks they all begin to wilt and die despite repeated watering and fertilization. The most likely cause of this die-off is

A) competition for resources.
B) anoxia.
C) organic nutrient depletion.
D) no room left for root growth.
E) buildup of toxic substances in the tray.