If stem cells were able to multiply uncontrollably, this would lead to uncontrolled growth, as in the case of cancer. WOX5 is an important signaling molecule that regulates stem cells in the meristem.

For example bone marrow stem cells only form different types of blood cells. Plants have stem cells too. They're found at the meristems, the growing tips of the roots and the shoots. The big ...

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Water's importance to plants stems from its central role in growth and photosynthesis, and the distribution of organic and inorganic molecules. Despite this dependence, plants retain less than 5% ...