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a complex chemical compound that fills the spaces in the cell wall between cellulose, hemicellulose, and pectin components, especially in tracheid, sclereid and other xylem cells. This makes the cell walls hard, woody and waterproof.
a general term form any plant diseases caused by different bacteria and fungi.
tissue that makes up the majority of the plant body and performs various functions.
graphical representation of various aspects of food chains.
a muscle, gland or organ capable of responding to a nerve impulse in order to bring about a...