Aplasia (Science: embryology) a lack of development of an organ or tissue or of the cellular products from an organ or tissue. Compare: hypoplasia. Origin: gr. Plassein = to form failure of some tissue or organ to develop.A result where an organ fails to develop completely or not at all...
Life, as we know it today, is presumed to have started in the sea and many of them were likely eukaryotic animal-like or..
Mammals are a diverse group of organisms, where most of them develop their offspring within the uterus of the mother. Ov..
Plantlife can be studied at a variety of levels, from the molecular, genetic and biochemical level through organelles, c..
Stems primarily provide plants structural support. This tutorial includes lectures on the external form of a woody twig ..
Plants are responsible for incredible feats of molecular transformation. Plant processes, such as photosynthesis, photop..
This tutorial introduces flowing water communities, which bring new and dithering factors into the equation for possible..
