Bio 114 Exam 3 Study Guide Oswald
University of Idaho 2024/2025 Fall Semester.
(Answered) With Complete Verified Solution. 100%
Correct.
M.C.
Which type of symmetry does each of the following animals display?
Asymmetry: Sponge
Bilateral: Snake, Turtle, Bobcat, Octopus
Radial: Hydra, Jelly
M.C.
Animal tissues develop from embryonic germ layers. Triploblastic animals have three germ layers
(ectoderm, mesoderm, and endoderm) and three basic body plans related to body cavities
(acoelomate, pseudocoelomate, and coelomate).
Select the three statements that are true.
1) In a pseudocoelomate, the tissue lining the inner side of the body cavity arises from the same germ
layer as the muscles.
2) In a coelomate, the tissue lining the inner side of the body cavity arises from the same germ layer as
the tissue lining the outer side of the body cavity.
3) A diploblast has no mesoderm.
4) The digestive tract of a coelomate functions as a coelom.
5) An acoelomate triploblast has no endoderm.
6) A pseudocoelom has the same functions as a true coelom.
1) In a coelomate, the tissue lining the inner side of the body cavity arises from the same germ layer as
the tissue lining the outer side of the body cavity.
2) A diploblast has no mesoderm.
3) A pseudocoelom has the same functions as a true coelom.
M.C.
Many animals can be categorized as either protostomes and deuterostomes based on certain features
,of their embryonic development. Determine whether each of the following terms applies to only
protostomes, only deuterostomes, both protostomes and deuterostomes, or neither.
Drag each item to the appropriate bin.
Protostome: Mouth from Blastopore, Spiral Determinate Cleavage, Coelom from solid masses in
mesoderm
Dueterostome: Anus from Blastopore, Radial Indeterminate Cleavage, Ceolom from folds in archenteron
Both: Triploblasts
Neither: Diploblasts
M.C.
What is the significance about cephalization?
A concentration of sensory organs allows better detection of threats for motile organisms.
M.C.
Which phylum includes the most basal lineages of animals?
Porifera
M.C.
Indicate the origin of cnidocytes on the figure
At the base of cnidaria
M.C.
You find an animal with a bilateral larval form but what appears to be a radial adult form. Which taxa
would you presume it to belong to?
Cnidaria
M.C.
The phyla Porifera, Cnidaria, and Ctenophora are_____________.
The most ancient of all animal lineages
M.C.
What does phylogenetic evidence tell us about protostomes?
There were multiple transitions from water to land
M.C.
Locphotrochozoan phyla have a lophophore, a specialized structure for___________.
Suspension feeding
, M.C.
The molluscan body plan is based on three major components: the foot, the visceral mass, and
the__________.
Mantle
M.C.
Which adaptation is unique to insects among all protostomes?
The ability to move by flying
M.C.
As a group, invertebrates are_________.
Paraphyletic
M.C.
This phylum is exclusively marine and is named for having many spines and spikes.
Echinoderms
M.C.
Notochord
a flexible rod that runs along the anterior-posterior axis that may be associated with a jointed skeleton
M.C.
Pharyngeal clefts
Grooves that separate pouches along the side of the pharynx that may develop into parts of the ear
M.C.
pharyngeal slits
openings to the outside of the body along the side of the pharynx that may develop into gill slits
M.C.
dorsal, hollow nerve cord
a bundle of nervous tissue running the length of the body that may develop into the brain and spinal
chord
M.C.
muscular, post-anal tail
a structure that contains muscles and extends past the anus that may be used to propel some species in
water
M.C.
The phylogenetic tree shown here displays the major clades of chordates. Which statements about the
phylogenetic tree are true?
University of Idaho 2024/2025 Fall Semester.
(Answered) With Complete Verified Solution. 100%
Correct.
M.C.
Which type of symmetry does each of the following animals display?
Asymmetry: Sponge
Bilateral: Snake, Turtle, Bobcat, Octopus
Radial: Hydra, Jelly
M.C.
Animal tissues develop from embryonic germ layers. Triploblastic animals have three germ layers
(ectoderm, mesoderm, and endoderm) and three basic body plans related to body cavities
(acoelomate, pseudocoelomate, and coelomate).
Select the three statements that are true.
1) In a pseudocoelomate, the tissue lining the inner side of the body cavity arises from the same germ
layer as the muscles.
2) In a coelomate, the tissue lining the inner side of the body cavity arises from the same germ layer as
the tissue lining the outer side of the body cavity.
3) A diploblast has no mesoderm.
4) The digestive tract of a coelomate functions as a coelom.
5) An acoelomate triploblast has no endoderm.
6) A pseudocoelom has the same functions as a true coelom.
1) In a coelomate, the tissue lining the inner side of the body cavity arises from the same germ layer as
the tissue lining the outer side of the body cavity.
2) A diploblast has no mesoderm.
3) A pseudocoelom has the same functions as a true coelom.
M.C.
Many animals can be categorized as either protostomes and deuterostomes based on certain features
,of their embryonic development. Determine whether each of the following terms applies to only
protostomes, only deuterostomes, both protostomes and deuterostomes, or neither.
Drag each item to the appropriate bin.
Protostome: Mouth from Blastopore, Spiral Determinate Cleavage, Coelom from solid masses in
mesoderm
Dueterostome: Anus from Blastopore, Radial Indeterminate Cleavage, Ceolom from folds in archenteron
Both: Triploblasts
Neither: Diploblasts
M.C.
What is the significance about cephalization?
A concentration of sensory organs allows better detection of threats for motile organisms.
M.C.
Which phylum includes the most basal lineages of animals?
Porifera
M.C.
Indicate the origin of cnidocytes on the figure
At the base of cnidaria
M.C.
You find an animal with a bilateral larval form but what appears to be a radial adult form. Which taxa
would you presume it to belong to?
Cnidaria
M.C.
The phyla Porifera, Cnidaria, and Ctenophora are_____________.
The most ancient of all animal lineages
M.C.
What does phylogenetic evidence tell us about protostomes?
There were multiple transitions from water to land
M.C.
Locphotrochozoan phyla have a lophophore, a specialized structure for___________.
Suspension feeding
, M.C.
The molluscan body plan is based on three major components: the foot, the visceral mass, and
the__________.
Mantle
M.C.
Which adaptation is unique to insects among all protostomes?
The ability to move by flying
M.C.
As a group, invertebrates are_________.
Paraphyletic
M.C.
This phylum is exclusively marine and is named for having many spines and spikes.
Echinoderms
M.C.
Notochord
a flexible rod that runs along the anterior-posterior axis that may be associated with a jointed skeleton
M.C.
Pharyngeal clefts
Grooves that separate pouches along the side of the pharynx that may develop into parts of the ear
M.C.
pharyngeal slits
openings to the outside of the body along the side of the pharynx that may develop into gill slits
M.C.
dorsal, hollow nerve cord
a bundle of nervous tissue running the length of the body that may develop into the brain and spinal
chord
M.C.
muscular, post-anal tail
a structure that contains muscles and extends past the anus that may be used to propel some species in
water
M.C.
The phylogenetic tree shown here displays the major clades of chordates. Which statements about the
phylogenetic tree are true?
