2.1 Classification and Biodiversity Flashcards
What is the primary purpose of classification in biology?
To organize and categorize living organisms based on shared characteristics.
True or False: The binomial naming system consists of two parts: the genus and species.
True
Fill in the blank: The domain that includes organisms with prokaryotic cells is called __________.
Bacteria
What are the three domains of life?
Bacteria, Archaea, and Eukarya.
Which classification level comes after ‘family’?
Genus
What is the significance of phylogenetic trees?
They illustrate the evolutionary relationships among species.
True or False: All members of a species can interbreed and produce fertile offspring.
True
Multiple Choice: Which of the following is NOT a kingdom in the domain Eukarya? A) Animalia B) Fungi C) Monera D) Plantae
C) Monera
What is a clade?
A group of organisms that includes an ancestor and all its descendants.
Fill in the blank: The classification system that uses hierarchical categories is known as __________.
Linnaean taxonomy
What is the main difference between prokaryotic and eukaryotic cells?
Prokaryotic cells lack a nucleus, while eukaryotic cells have a nucleus.
True or False: Genetic diversity is important for the survival of a species.
True
What is biodiversity?
The variety of life in a particular habitat or ecosystem.
Multiple Choice: Which term describes the number of different species in an ecosystem? A) Species richness B) Ecosystem diversity C) Genetic diversity D) Population density
A) Species richness
What role do keystone species play in an ecosystem?
They have a disproportionately large impact on their environment relative to their abundance.
Fill in the blank: The process by which new species arise is called __________.
Speciation
True or False: Habitat destruction is a major threat to biodiversity.
True
What is an endemic species?
A species that is native to and found only within a specific geographic area.
Multiple Choice: Which of the following is a method used to measure biodiversity? A) Quadrat sampling B) Trophic levels C) Biogeography D) Photosynthesis rates
A) Quadrat sampling
What is the term for the variety of genes within a species?
Genetic diversity
True or False: Invasive species can negatively impact native biodiversity.
True
What is the purpose of a species’ ecological niche?
It describes how a species interacts with its environment and fulfills its role within an ecosystem.
Fill in the blank: The classification system that ranks organisms from broad to specific categories is called __________.
Taxonomic hierarchy
What is the role of a taxonomist?
To classify and name organisms based on their characteristics and evolutionary relationships.
Multiple Choice: Which of the following levels of classification is the most specific? A) Class B) Order C) Family D) Species
D) Species
True or False: All organisms within a genus are closely related.
True
What is a hybrid species?
A species that results from the interbreeding of two different species.
Fill in the blank: The practice of conserving biodiversity is known as __________.
Conservation biology
What does the term ‘extinction’ mean?
The permanent loss of a species from the Earth.
Multiple Choice: Which of the following is a benefit of biodiversity? A) Increased ecosystem resilience B) Reduced genetic variation C) Higher rates of extinction D) Limited resource availability
A) Increased ecosystem resilience
What is an example of a symbiotic relationship?
Mutualism, commensalism, and parasitism.
True or False: Biodiversity is static and does not change over time.
False
What is biogeography?
The study of the distribution of species and ecosystems in geographic space and through geological time.
Fill in the blank: The interaction between organisms of different species in a community is known as __________.
Inter-specific competition
What is the main factor that influences species diversity in an ecosystem?
Environmental conditions and resources available.
Multiple Choice: Which of the following is a major cause of loss of biodiversity? A) Sustainable agriculture B) Climate change C) Pollution D) Both B and C
D) Both B and C
