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allergic reaction to certain allergens such as pollen. It causes sneezing, a runny nose and watery eyes.
long threads of genetic material (DNA and histone) found in the nucleus of a non-dividing cell...
anaerobic respiration that occurs in plants and results in the formation of ethanol and carbon...
animals that lack a cavity between the digestive tract and the outer body wall.
the outer most layer of tightly packed modified parenchyma cells in plants.