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organelles that only occur in the green parts of plants. They contain the green pigment chlorophyll.
a relationship between two different organisms, of different species, from which at least one of...
a complex chemical compound that fills the spaces in the cell wall between cellulose, ...
coiled thread-like structures of DNA and histone, which is a protein, in the cell nucleus. They...
consists of the pectoral and pelvic girdles together with the arms and legs.