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A. What is callus ? B. What do you und...

A. What is callus ?
B. What do you understand by totipotency of cell ? Name the scientist who coined the term.

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A. An unorganised mass of cells is called callus. It is usually produced by culturing explant in tissue culture laboratories. A superficial tissue developing in woody plants, usually through cambial activity, in response to wounding is also called. This tissue develops for protecting the injured surface.
B. Totipotency is ability or capability or capacity of a cell to give rise a complete organism, when cultured in a suitable culture medium at appropriate temperature and aeration conditions. The term totipotency was coined by German Botanist Gottieb Haberlandt in 1902.
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