A student examined a leaf and observed that it was dark green, thin, had stoma on the lower surface only, and had a total surface area of more than two square meters. In which environment was the leaf most likely growing?
A) a large, still pond B) a tropical rain forest C) an oasis within a grassland D) the floor of a deciduous forest
A plant developed a mineral deficiency after being treated with a fungicide. What is the most probable cause of the deficiency?
A) Mineral receptor proteins in the plant membrane were not functioning. B) Mycorrhizal fungi were killed. C) Active transport of minerals was inhibited. D) The genes for the synthesis of transport proteins were destroyed.