A group of organisms that can reproduce to produce fertile offspring .

How are organisms placed into groups in a classification system?

By the features (characteristics) they share — the more subdivided the group, the more features its members have in common.

Define the binomial system .

An internationally agreed system for naming species using two Latin parts: the genus followed by the species .

In the name Homo sapiens , which part is the genus and which is the species?

Homo is the genus (capital letter); sapiens is the species (lower-case letter).

In a binomial name, the genus begins with a letter and the species with a lower-case letter.

In a binomial name, the genus begins with a capital letter and the species with a lower-case letter.

True or False? When typed, binomial names are always written in italics.

True. Italics show that the name is Latin, e.g. Homo sapiens .

List the sequence of classification groups from largest to smallest.

Kingdom → Phylum → Class → Order → Family → Genus → Species

Who first classified organisms using the binomial system?

Linnaeus , a Swedish naturalist.

Define a dichotomous key .

A tool used to identify organisms by working through a series of paired statements about their features.

'Dichotomous' means branching into .

'Dichotomous' means branching into two .

How do you use a dichotomous key to identify several organisms?

Start with one organism and follow the paired statements from the beginning until you reach its name, then return to the start and repeat for each remaining organism.

True or False? Two organisms of different species can reproduce to produce fertile offspring.

False. Only members of the same species can reproduce to produce fertile offspring.

In the classification sequence, Class comes immediately after .

In the classification sequence, Class comes immediately after Phylum .

O LevelBiologyCambridge (CIE)Flashcards2. Classification2.1 Concept & Use of a Classification System

2.1 Concept & Use of a Classification System (Cambridge (CIE) O Level Biology): Flashcards

Exam code: 5090

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FrontClassifying Organisms
Define a species.

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Cards in this collection (13)

Define a species.
A group of organisms that can reproduce to produce fertile offspring.
How are organisms placed into groups in a classification system?
By the features (characteristics) they share — the more subdivided the group, the more features its members have in common.
Define the binomial system.
An internationally agreed system for naming species using two Latin parts: the genus followed by the species.
In the name Homo sapiens, which part is the genus and which is the species?
Homo is the genus (capital letter); sapiens is the species (lower-case letter).
In a binomial name, the genus begins with a letter and the species with a lower-case letter.
In a binomial name, the genus begins with a capital letter and the species with a lower-case letter.
True or False?
When typed, binomial names are always written in italics.
True.
Italics show that the name is Latin, e.g. Homo sapiens.
List the sequence of classification groups from largest to smallest.
Kingdom → Phylum → Class → Order → Family → Genus → Species
Who first classified organisms using the binomial system?
Linnaeus, a Swedish naturalist.
Define a dichotomous key.
A tool used to identify organisms by working through a series of paired statements about their features.
'Dichotomous' means branching into .
'Dichotomous' means branching into two.
How do you use a dichotomous key to identify several organisms?
Start with one organism and follow the paired statements from the beginning until you reach its name, then return to the start and repeat for each remaining organism.
True or False?
Two organisms of different species can reproduce to produce fertile offspring.
False.
Only members of the same species can reproduce to produce fertile offspring.
In the classification sequence, Class comes immediately after .
In the classification sequence, Class comes immediately after Phylum.

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