Which of the following statements is TRUE for an organism that has an alternation of generations life cycle:Diploid adults directly produce sexual cells that fuse during the process of fertilization. Solution The correct answer is :There are two different forms of fully mature adults, and the two forms cannot mate with one another. Reason: The two different forms of fully matured adults are the sporophyte(2n) and the gametophyte(n) that do not mate with one another..