Struggling with your prescribed literature?
Our Literature Study Guides provide insights and analysis of themes and characters and includes guidelines for writing your exam.
(also called the pith) the central part of the stem that consists of large, thin-walled parenchyma cells with intercellular airspaces
the membrane surrounding the vacuole. It is similar in structure and function to the cell...
a social structure in which different classes are determined by heredity.
the destruction of a donated organ by the immune system of the recipient.