How much do you have in common with felix, the cat? your biology teacher asks you to compare the classification scheme of humans to that of felix. what is the most specific level of classification we share? a) subphylum b) phylum c) class d) order   the answer is c

Ans. (C). class.

Cats and humans, both are eukaryotic organisms that belong to phylum chrodata and sub-phylum vertebrata. According to studies, humans and cats have 90% DNA similarities. The most specific level of classification, shared by humans and cats is 'class' as both belongs to same class.

Both humans and cats belong to class mammalia, which include organisms that produce live young, have mammary glands for feeding of young, and possession of fur or hair on body.

Thus, the correct answer is option (C).

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explanation:

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blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.