The region of a plant stem in which cells divide to increase its diameter is? By: Sunday|Published on: Dec 23|Categories: Biology WAEC| 0 comments A. cambium B. phloem C. xylem D. collenchyma Correct Answer: Option A – cambium Users Also Read These:In which of the plant tissues are guard cells located?In plant cells the role of the membrane is played by the?Which ONE is not an adaptation for water…The diameter of a brass ring at 30 °C is 50.0 cm. To…Which of these organelles is common to both plant…SEE ALSO Which of the following is a function of the chromosome?