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a fine thread-like structure. In plants: the stalk of the male sexual organ.
is one-millionth of a metre or one-thousandth of a millimetre (0,001 mm). Its unit symbol in the...
small, non-pigmented plastids that occur in roots and non-photosynthetic tissues of plants. They...
potentially lethal disease in humans and grazing animals such as cows and sheep. The disease is...
biological classification group (taxon) for plants that are divided into classes.