Which amongst the following is undifferentiated cells lacking secondary cell wall and plastids, have dense cytoplasm, prominent and large nucleus? 

Meristematic cells are undifferentiated cells lacking secondary cell wall and plastids, have dense cytoplasm, prominent and large nucleus. The meristem which occurs between mature tissues is known as intercalary meristem. They occur in grasses and regenerate parts removed by the grazing herbivores. Meristematic cells are not specialized and therefore will not have any specialized function like food storage, photosynthesis etc.