Download Exam practice answers 13

OCR AS Biology exam practice answers
13 Classification
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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]
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