B2 Flashcards

B2 revision cards for classification

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  • Created by: Eleanor.1
  • Created on: 03-05-14 10:40
What are the different classifing groups?
Kingdom, phylum, class, order, fmaily, genus, species
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What happens when you move down towards 'species'?
There are fewer organisms that share more similarities
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What two ways can organisms be classified?
An artificial system and a natural system.
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What is an artificial system?
One or two characteristics that make identification easier
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What is a natural system?
Based on evolutionary relationsihps and is more detailed
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What has DNA enabled scientists to know more about?
How close organisms are and how often they can be reclassified
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What is a species?
Organisms that can interbreed and produce fertile offspring
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How are organisms named?
By the binomial system
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How does the binomial system work? (1 reason)
2 parts to the name, first is the genus, second is the species
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How does the binomial system work? (Another reason)
Genus starts with a capital letter, species does not
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What make it difficult to classify organisms?
They are at different stages of evolution
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What make it difficult to classify organisms? (2)
There are new ones being discovered all the time.
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Characteristics of an Archaropteryx
Feathers (bird) and teeth and a log bony tail (reptile)
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Which organisms present specific problems?
Bacteria and hybrids.
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What problems to bacteria cause?
Do not interbreed, can't be classified into different species
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What is the problem with hybrids?
They are infertile, can't be classified as a species
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When classifying organisms, what is it important to bear in mind?
The similarities and differences between the organisms
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What similarities do dolphin and fish have?
They live in the same habitat (ecologically related)
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What differences do dolphin and fish have?
They are classified differently, dolphins are mammals
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What similarities do dolphin and bats have?
They are both mammals.
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What differences do dophins and bats have?
They live in different habitats.
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Other cards in this set

Card 2

Front

What happens when you move down towards 'species'?

Back

There are fewer organisms that share more similarities

Card 3

Front

What two ways can organisms be classified?

Back

Preview of the front of card 3

Card 4

Front

What is an artificial system?

Back

Preview of the front of card 4

Card 5

Front

What is a natural system?

Back

Preview of the front of card 5
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