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organisms whose cells have a true nucleus and true organelles. These structures are not surrounded by a membrane.
the transfer of pollen from the anther to the stigma of the same plant (self-pollination) or of...
a measure showing the number of dependents (aged 0-14 and over the age of 65) to the total...
semi-liquid mass of partially digested food and gastric juices, produced in the stomach.
(also called secondary meristems) regions of cells capable of dividing to form new cells in the...