Your evil roommate treats your favorite plant with a fungicide that kills fungus. your favorite plant develops a mineral deficiency after the treatment. for nothing evil roommate. what is the most probable cause of the deficiency? question 2 options: a) proton pumps reversed the membrane potential. b) mycorrhizal fungi were killed. c) active transport of minerals was inhibited. d) your favorite plant wasn't a plant at all but just a pretty fungus. e) mineral receptor proteins in the plant membrane were not functioning.

The correct answer is option B, that is, mycorrhizal fungi were killed.

An essential element affecting uptake of minerals in some of the plants is the symbiotic relationship established between the root and a mycorrhizal fungus. The majority of the plants develop more gradually and relies on mycorrhizal relationships to extract soil-water and nutrient reserves in their competition with other plants.

Thus, with the application of fungicides the population of mycorrhizal fungi dies and therefore, the mechanism of mineral uptake gets affected. As a result, the plant develops a mineral deficiency.

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.