Taxonomy Flashcards
What is the science of biological classification called?
Taxonomy
Taxonomy involves arranging living things into groups based on common characteristics.
Who introduced the system of naming organisms?
Carolus Linnaeus
Linnaeus was a Swedish naturalist known for developing the binomial nomenclature system.
List three reasons for the classification of living things.
- To put every living organism into a systematic order
- For easy identification of similar living things
- To indicate the relationship between different categories of living organisms
What are the traditional tools for classification of living things?
- Morphology
- Anatomy
What are the modern tools for classification of living things?
- Sequence of amino acids in protein
- Sequence of bases in DNA
What is the highest taxonomic group that includes closely related phyla?
Kingdom
What is a phylum in biological classification?
A group of closely related classes.
What is the smallest unit of classification?
Species
Species are groups of organisms that can interbreed freely to produce fertile offspring.
What does binomial nomenclature consist of?
Two parts: genus name (capitalized) and species name (lowercase).
True or False: In binomial nomenclature, both names are italicized when printed.
True
Name the five kingdoms in the five-kingdom classification.
- Kingdom Monera
- Kingdom Protista
- Kingdom Fungi
- Kingdom Plantae
- Kingdom Animalia
What type of cells do prokaryotes have?
Cells without organized nuclei.
What is a characteristic of eukaryotic cells?
They have a true nucleus with a nuclear envelope.
What is the mode of nutrition for autotrophic organisms?
They produce their own food.
What is an example of a virus?
Poxvirus
Viruses are not classified in the five kingdoms due to their unique characteristics.
What is the general characteristic of organisms in Kingdom Monera?
They are unicellular prokaryotes.
What do bacteria lack?
A true nucleus and membrane-bound organelles.
How do bacteria reproduce?
By binary fission.
What is the main feature of Kingdom Protista?
Eukaryotic unicellular organisms.
What are the two main phyla in Kingdom Protista?
- Protophyta
- Protozoa
What is a unique feature of Euglena?
It has both plant-like and animal-like characteristics.
What is a characteristic of fungi?
They are eukaryotic and can be saprophytic or parasitic.
What is the cell wall of fungi made of?
Chitin
What is the economic importance of fungi?
- Decomposers
- Antibiotics production
- Used in fermentation processes
What defines vascular plants?
Plants with specialized tissues for transporting water and nutrients.
What are non-vascular plants lacking?
Specialized tissues for conducting water and nutrients.
What are examples of non-vascular plants?
- Thallophyta (e.g., algae)
- Bryophyta (e.g., mosses)
What is a defining feature of Pteridophytes?
They produce spores instead of seeds.
What type of organisms are classified under Kingdom Fungi?
Eukaryotic organisms that are saprophytic or parasitic.
What are examples of pteridophytes?
Ferns, such as Dryopteris, Felimas, and water fern
Other examples include clubmosses like Lycopodium and Selaginella, and horsetails such as Psilotum.