please help 17-20

D Question 18 2 pts A researcher is studying how well certain plant species can tolerate drought stress. The researcher had four plants each of four different species of plants, for a total of 16 plants. He then subjected each plant to a minimal amount of watering then measured their dry biomass content. A plant with a high dry biomass value is considered more resistant to drought. State the appropriate null hypothesis Ho: OH1 H2 #3