Topic content:
Observe the following classification system diagram and answer the questions:
(1) Is there more difference between a tiger and a leopard, or between a tiger and a cat? Why?
(2) Among the above creatures, what is the closest relative to human beings?
(3) What are the common classification units of cats and dogs?
(4) Please write down the classification unit to which leopards belong.
Best answer:
(1) There are many differences between tigers and leopards. Because tigers and leopards belong to different genera, while tigers and cats belong to the same genus, there are more differences between creatures of different genera than between creatures of the same genus
(2) Anthropoid apes.
(3) Boundary, door, class and order.
(4) Leopard, Felidae, Carnivora, Mammalia, Chordata, Animal kingdom.
Answer analysis:
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Test core:
Biological classification units: the main biological classification units are kingdom, phylum, class, order, family, genus and species. There are also subspecies (abbreviated as subsp.), plants and varieties (abbreviated as var.). Sometimes there are some auxiliary grades. In fact, the main classification grade terms are prefixed with super - and sub -. Sometimes, infraclass and infraorder are set respectively under subclass and suborder. Example: Taking the well-known name Felisdomesticus (domestic cat) as an example, its classification system and name are as follows: Animalia, Chordata, Vertebrata, Vertebrata, Mammalia, Mammalia, Carnivora, Felidae, Felis