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(also called pith rays) sections of the medulla that occur between the vascular bundles.
a type of nuclear division during which reproductive cells divide to produce gametes. The...
undifferentiated and unspecialised actively dividing cells in the growth regions of plants, such...
middle body tissue layer that forms the muscular, circulatory and excretory systems.
plants that live in areas with a moderate water supply where it is neither wet nor dry.
all the chemical processes that take place in cells.
all the chemical reactions involved in maintaining the living state of the cells and the...
the spread of cancer cells from the original (primary) malignant tumour to other parts of the...
simple inorganic chemical substances (mineral salts) that are needed in very small amounts for...