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OCR AS Biology exam practice answers 13 Classification 1 Kingdom Animalia Phylum Chordata Class Mammalia Order Carnivora Family Felidae Genus Panthera Species pardus [5] 2 (a) This is a convenient way group flowers. However, it does not indicate anything about the evolutionary relationships between the species. [2] (b) Able to move about; heterotrophic nutrition; multicellular. [3] (c) (i) True nucleus; membrane-bound organelles; wall of chitin. [3] (ii) True nucleus; membrane-bound organelles. [2] 3 DNA is present in all living things. The sequence of bases in DNA codes for the structure of proteins. The sequence of bases codes for the sequence of amino acids in the protein. A similar sequence of bases indicates few mutations, suggesting the species are closely related. Many differences in base sequence are caused by many mutations, which indicates the species are less closely related. Therefore, evolutionary relationships are indicated. [7] Hodder Education © 2013 1