4.2.2: Classification And Evolution Flashcards
What is classification in biology?
The group of organisms according to similarities.
Classification helps in identifying species, understanding evolutionary relationships, and tracking changes in population size.
What is a taxon?
A level or group in the classification hierarchy.
The plural of taxon is taxa.
What is the Linnaeus classification system?
A hierarchical system used to classify organisms.
It organizes species into groups based on similarities.
List the main groups (taxa) in the Linnaeus classification system.
- Domain
- Kingdom
- Phylum
- Class
- Order
- Family
- Genus
- Species
What does a hierarchy in classification mean?
Smaller groups placed within larger groups without overlaps.
Each level in the hierarchy is distinct.
What is the domain for humans in the classification system?
Eukaryote
What is the kingdom for humans in the classification system?
Animalia
What is the phylum for humans in the classification system?
Chordata
What is the class for humans in the classification system?
Mammalia
What is the order for humans in the classification system?
Primates
What is the family for humans in the classification system?
Hominidae
What is the genus for humans in the classification system?
Homo
What is the species for humans in the classification system?
Sapiens
Define species in biological terms.
Two organisms that can produce fertile offspring.
Members of different species can produce infertile hybrids, which are not considered a species.
True or False: A liger is considered a species.
False
A liger is a hybrid and is infertile, thus not classified as a species.
What is the purpose of the universal classification system?
To enable scientists to share data on species across different countries.
Fill in the blank: The mnemonic for the taxa is _______.
MISSESTRUCH
