- Life Sciences
the clear colourless fluid that occurs in the spaces, such as the ventricles and central canal, of the central nervous system.
(also called physical digestion) the breaking down of food into smaller pieces using mechanical...
single-celled organisms with all life functions performed within the cell.
moulds that generally infect the leaves of many plants, including crop plants, such as wheat and...
a fine thread-like structure. In plants: the stalk of the male sexual organ.