5. There are many factors that affect plant growth, including the salts and minerals in their water supply. A farmer wants to find the right concentration of mineral solution to use with his sunflower crop. He places five sunflowers in a beaker of 1 M mineral solution, five sunflowers in a beaker of 0.5 M mineral solution, and five sunflowers in a beaker of 0.2 M mineral solution. a) Calculate the solute potential of a 0.5 M mineral solution at room temperature (25⁰C). A sample sunflower has a solute potential of -28 bars within its cells. (Note: i =ionization constant = 1.0) Determine the direction water will flow between the sunflower and its environment.
b) Once equilibrium is reached between sunflower and the environment, calculate the turgor pressure inside the plant cell.

Which of the following scenarios is an example of the bottleneck effect? answers a in south africa, much of the afrikaner population is descended from a small number of dutch colonists. in this population, this is an unusually high frequency of pseudoxanthoma elasticum (pxe), an elastic tissue disorder. b four white-tailed deer are introduced to a park in finland. thirty years after their introduction scientists compare the genes in the population and find that there is no variation. c during the industrial revolution, london's air became filled with soot. as a result, birds started eating more of the lighter moths because they were easier to spot than their darker counterparts. over time, the moth population changed so that there were more darker moths than lighter ones. d 10% of the population of american alligators in an area have the recessive trait albinism. a massive flood results in the death of 80% of the population. of the remaining population, 60% have the recessive trait of albinism.

Under the soviet system, the government a. controlled all forms of communication. b. allowed newspapers to print whatever they wanted. c. controlled editorials but not the reporting of news. d. encouraged access to a wide variety of news sources. select the best answer from the choices provided a b c d

20 how are energy cycles and growth cycles related?