The region of a plant stem in which cells divide to increase its diameter is? by Sunday | Dec 23 | Biology WAEC | 0 comments A. cambium B. phloem C. xylem D. collenchyma Correct Answer: Option A – cambium Users Also Read These:Which of the following instruments is most suitable…Animal cells are different from plant cells because…During sexual reproduction in Paramecium, how many…In order to enable the government of a country to…The diameter of a brass ring at 30 °C is 50.0 cm. To…