Which of the following events ensures genetic diversity in sexually reproducing organisms during a meiotic division A. Reproduction of chromosome number
B. Independent assortment of homologous chromosomes
C. Separation of sister chromatids
D. DNA Replication

not sure if this is what you'r looking for eubacteria and archaebacteria

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

b a mature ovary of a plant.