#1
Which of the following is not a domain in the three-domain system of classification?
Prokarya
ExplanationProkarya is not a domain; the three domains are Archaea, Bacteria, and Eukarya.
#2
Which of the following is not a characteristic of bacteria?
Presence of a nucleus
ExplanationBacteria lack a true nucleus.
#3
Which of the following is a characteristic of prokaryotic cells?
Circular chromosomes
ExplanationProkaryotic cells typically have circular chromosomes.
#4
Which of the following is a characteristic of the domain Eukarya?
Presence of a nucleus
ExplanationEukarya have a nucleus.
#5
Which taxonomic rank is higher than class and lower than phylum?
Order
ExplanationOrder ranks above class and below phylum in the taxonomic hierarchy.
#6
Which scientist proposed the system of binomial nomenclature?
Carl Linnaeus
ExplanationCarl Linnaeus introduced binomial nomenclature.
#7
Which of the following is a defining characteristic of Archaea?
Ability to thrive in extreme environments
ExplanationArchaea are known for their ability to survive in extreme conditions.
#8
Which taxonomic rank is higher than kingdom?
Domain
ExplanationDomain is the highest taxonomic rank.
#9
What is the correct format for writing a scientific name in binomial nomenclature?
Genus species
ExplanationBinomial nomenclature uses Genus species format.
#10
Which of the following is a eukaryotic microorganism?
Fungi
ExplanationFungi are eukaryotic microorganisms.
#11
What is the correct order of taxonomic categories from broadest to most specific?
Kingdom, Phylum, Class, Order, Family, Genus, Species
ExplanationTaxonomic categories go from Kingdom to Species in increasing specificity.
#12
Who proposed the three-domain system of classification?
Carl Woese
ExplanationCarl Woese proposed the three-domain system.
#13
What is the primary criterion used to classify organisms into different species?
Reproductive isolation
ExplanationReproductive isolation is the primary criterion for species classification.
#14
In taxonomy, what does the term 'polyphyletic' refer to?
A group that does not include the most recent common ancestor of all members
ExplanationPolyphyletic groups lack a common ancestor for all members.
#15
Who proposed the five-kingdom system of classification?
Robert Whittaker
ExplanationRobert Whittaker proposed the five-kingdom system.
#16
In taxonomy, what does the term 'monophyletic' refer to?
A group that includes an ancestor and all its descendants
ExplanationMonophyletic groups include an ancestor and all its descendants.