Tutorial
iGCSE Biology: Classification Systems
Learn about biological classification for Cambridge iGCSE Biology, including the binomial system, species definition, dichotomous keys, and using DNA evidence for evolutionary relationships.
Tutorial
iGCSE Biology: Classification Systems
Learn about biological classification for Cambridge iGCSE Biology, including the binomial system, species definition, dichotomous keys, and using DNA evidence for evolutionary relationships.
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Deck Contents
24 CardsLesson#1
To make sense of the vast diversity of life, biologists classify organisms into groups. The fundamental principle of this system is that organisms are grouped together based on the features they share.
Quiz#2
On what basis are organisms classified into groups?
shared features
Lesson#3
The most fundamental group in classification is the species. For your exam, the definition is very specific: a species is a group of organisms that can reproduce with one another to produce fertile offspring. This means their children can also have children.
Quiz#4
What is the definition of a species?
a group of organisms that can reproduce to produce fertile offspring
Lesson#5
It's a common misconception that organisms are in the same species just because they look alike. The key part of the definition is the ability to produce 'fertile offspring'. For example, a horse and a donkey can reproduce, but their offspring, a mule, is infertile. Therefore, horses and donkeys are different species.
Quiz#6
What is the crucial characteristic of the offspring produced by members of the same species?
they are fertile
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