Plants are grown at various population densities under conditions in a . A number of replicates will be set up at to ensure that differences between treatments are not a result of chance. When the seedlings have grown to a certain size, a small number of fungal spores will be placed on in each treatment.

it has one origin of replication, but it proceeds in two directions - d)

stimulus is a change in the environment that causes an organism to react. the response is the reaction to the stimulus. some examples of stimuli for zebras are drought, to many predators, and bad feeding grounds such as dead grass or plants. zebras respond to stimuli just like all other living organisms

bacterium is not correct