11. Apical meristems are the completely undifferentiated ( indeterminate ) meristems in a plant. 12. As plant cells die, nearby cells are induced into forming meristem tissue. 13. These differentiate into three kinds of primary meristems . 14. Asphodeloideae also have a characteristic secondary growth by means of a secondary thickening meristem . 15. All are secondary thickening meristem in the stem. 16. Branch roots arise from this primary meristem tissue. 17. Like the apical meristem , axillary buds can develop into a stem or flower. 18. It accumulates in the meristem region ( active growth region ) of the plant. 19. The key issue is whether you leave the plant with any meristems after pruning. 20. The " bif2 " mutation affects all axillary meristems in the plant.