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the directional growth of a plant in response to light.
biological, chemical, or physical agent that stimulates a characteristic function or causes a...
a drug that inhibits (slows down) the action of the nervous system.
specialised heart muscle tissue between the right atrium and right ventricle which conducts the...
(also called macromolecules) large, more complex molecules formed when monomers join together....
a cluster of capillaries situated inside Bowman's capsule in the nephron.