ZOOL 250 LAB Quiz I: Exam Questions and Answers with Verified
Solutions | Latest 2026 Update
Q: Analogous
Answer:
Characteristics similar in form but not present in a common ancestor
Q: Character States
Answer:
Character traits are described in terms of their states i.e 'hair present' vs 'hair
absent'
Q: Clade
Answer:
A group of species that includes an ancestral species and all of its descendants
Q: Cladistic Analysis
Answer:
A quantitative method for determining relatedness among organisms based on two
premises
Q: Cladogram
Answer:
Detailed pattern of branching relations
Q: Class
Answer:
In Linnaean classification, the taxonomic category above the level of order
Q: Classification
Answer:
Grouping of animals based on information from cladistic and traditional
phylogenetic analyses
Q: Endoskeleton
,Answer:
A hard skeleton buried within the soft tissues of an animal
Q: Family
Answer:
In Linnaean classification, the taxonomic category above genus
Q: Genus
Answer:
A taxonomic category above the species level, designated by the first word of a
species' two-part scientific name
Q: Homologous
Answer:
Characteristics present in a common ancestor
Q: Kingdom
Answer:
A taxonomic category, the second broadest after domain
Q: Monophyletic
Answer:
Pertaining to a group of taxa that consists of a common ancestor and all of its
descendants
Equivalent to a clade
Q: Order
Answer:
In Linnaean classification, the taxonomic category above the level of family
Q: Phylogenetic Tree
Answer:
A branching diagram that represents a hypothesis about the evolutionary history of
a group of organisms
Q: Taxon
, Answer:
A named taxonomic unit at any given level of classification
Q: What is the difference between a phylogenetic tree and a classification?
Answer:
A phylogenetic tree is a representation of an evolutionary history hypothesis for a
group of organisms as a result of cladistic analysis,
While classification uses information from cladistic analyses and traditional
phylogenetic analyses to group animals into a group of higher taxa (Kingdom,
Phylum, Class, Order, Family, Genus)
Q: What is the difference between a clade and a group of animals at a given
taxonomic rank?
Answer:
A clade is a monophyletic group therefor containing a common ancestor and all of
it descendants,
While animals of a taxonomic rank are grouped by their classification (Kingdom,
Phylum, Class, Order, Family, Genus)
Q: What is the correct order of nesting of taxonomic levels within a
classification?
Answer:
Kingdom, Phylum, Class, Order, Family, Genus
They may be further subdivided by adding th prefixes sub- or super-
Q: What is the taxonomic level of each part of the italicizes, two-part latin name
usually used to refer to a unique kind of organism?
Answer:
The system of binomial nomenclature name a species first by its Genus and then its
specific epithet
What is the difference between an exoskeleton, and endoskeleton, and a
hydrostatic skeleton? -
An exoskeleton is a rigid hard encasement, such as a shell, that provides protection
and points of attachment for muscles
An endoskeleton is a hard skeleton buried within the soft tissues of an animal
providing support and muscle antagonists
Solutions | Latest 2026 Update
Q: Analogous
Answer:
Characteristics similar in form but not present in a common ancestor
Q: Character States
Answer:
Character traits are described in terms of their states i.e 'hair present' vs 'hair
absent'
Q: Clade
Answer:
A group of species that includes an ancestral species and all of its descendants
Q: Cladistic Analysis
Answer:
A quantitative method for determining relatedness among organisms based on two
premises
Q: Cladogram
Answer:
Detailed pattern of branching relations
Q: Class
Answer:
In Linnaean classification, the taxonomic category above the level of order
Q: Classification
Answer:
Grouping of animals based on information from cladistic and traditional
phylogenetic analyses
Q: Endoskeleton
,Answer:
A hard skeleton buried within the soft tissues of an animal
Q: Family
Answer:
In Linnaean classification, the taxonomic category above genus
Q: Genus
Answer:
A taxonomic category above the species level, designated by the first word of a
species' two-part scientific name
Q: Homologous
Answer:
Characteristics present in a common ancestor
Q: Kingdom
Answer:
A taxonomic category, the second broadest after domain
Q: Monophyletic
Answer:
Pertaining to a group of taxa that consists of a common ancestor and all of its
descendants
Equivalent to a clade
Q: Order
Answer:
In Linnaean classification, the taxonomic category above the level of family
Q: Phylogenetic Tree
Answer:
A branching diagram that represents a hypothesis about the evolutionary history of
a group of organisms
Q: Taxon
, Answer:
A named taxonomic unit at any given level of classification
Q: What is the difference between a phylogenetic tree and a classification?
Answer:
A phylogenetic tree is a representation of an evolutionary history hypothesis for a
group of organisms as a result of cladistic analysis,
While classification uses information from cladistic analyses and traditional
phylogenetic analyses to group animals into a group of higher taxa (Kingdom,
Phylum, Class, Order, Family, Genus)
Q: What is the difference between a clade and a group of animals at a given
taxonomic rank?
Answer:
A clade is a monophyletic group therefor containing a common ancestor and all of
it descendants,
While animals of a taxonomic rank are grouped by their classification (Kingdom,
Phylum, Class, Order, Family, Genus)
Q: What is the correct order of nesting of taxonomic levels within a
classification?
Answer:
Kingdom, Phylum, Class, Order, Family, Genus
They may be further subdivided by adding th prefixes sub- or super-
Q: What is the taxonomic level of each part of the italicizes, two-part latin name
usually used to refer to a unique kind of organism?
Answer:
The system of binomial nomenclature name a species first by its Genus and then its
specific epithet
What is the difference between an exoskeleton, and endoskeleton, and a
hydrostatic skeleton? -
An exoskeleton is a rigid hard encasement, such as a shell, that provides protection
and points of attachment for muscles
An endoskeleton is a hard skeleton buried within the soft tissues of an animal
providing support and muscle antagonists
