Biology 1108 Exam 3 (2025) Actual
Exam Questions and Answers A+
Graded
When .two .species .compete .for .similar .resources, .resource .partitioning .can
.alter .the .niche .of .the .species .that .compete. .The .figure .shows .an .example .of
.this.
Resource .partitioning .results .in:
A. .individuals .of .each .species .sharing .the .resources .that .they .both .exploit.
B.individuals .of .each .species .hybridizing .in .the .region .of .overlap.
C.a .move .from .the .fundamental .niche .to .the .realized .niche .for .both .species.
D.a .move .from .the .realized .niche .to .the .fundamental .niche .for .both .species. .-
.CORRECT .ANSWER .-C.a .move .from .the .fundamental .niche .to .the .realized
.niche .for .both .species.
Cnidaria .- .CORRECT .ANSWER .-Phylum .chartacterized .by .radial .symmetry, .2
.germ .tissues .in .the .embryo; .a .closed .internal .gastric .cavity, .and .well-
developed .tissues .but .not .organs; .includes .jellyfish, .esea .anemones, .and
.corals
Bilateria .- .CORRECT .ANSWER .-Monophyletic .group .of .animals .with .bilateral
.symmetry
Protostomes .- .CORRECT .ANSWER .-Bilaterian .in .whcih .the .blastopore .first
.opening .to .internal .cavity .of .developing .embryo .becomes .mouth
Deuterostomes .- .CORRECT .ANSWER .-Bilaterian .in .which .the .blastopore, .the
.first .opening .to .the .internal .cavity .of .the .developing .embryo, .becomes .the
.anus
Humans .and .chordates
Choanocytes .- .CORRECT .ANSWER .-Type .of .cell .that .lines .the .interior .surface
.of .a .sponge;have .flagella .and .function .in .nutrition .and .gas .exchange
Mesohyl .- .CORRECT .ANSWER .-Gelatinous .mass .lies .between .interior .and
.exterior .cell .layers .of .sponge .that .contains .some .amoeba-like .cells .that
.function .in .skeleton .formation .and .dispersal .of .nutrients
Eumetazoa .- .CORRECT .ANSWER .-Monophyletic .group .of .all .animals .other .than
.sponges
,Gastric .Cavity .- .CORRECT .ANSWER .-Cindarians, .closed .internal .site .where
.extracellular .digestion .and .excretion .take .place
Epidermis .- .CORRECT .ANSWER .-Mammals, .outer .layer .of .skin, .which .serves .as
.a .water-resistant, .protective .barrier.
Plants, .outermost .layer .of .cells .in .leaves, .young .stems .(lacking .secondary
.growth), .and .roots. .Outer .layer .of .cnidarian .body.
Endodermis .- .CORRECT .ANSWER .-In .plants, .layer .of .cells .surrounding .the
.xylem .and .phloem .at .the .center .of .the .root .that .controls .movement .of .nutrients
.into .xylem
Inner .lining .of .cnidarian .body
Mesoglea .- .CORRECT .ANSWER .-In .cnidareans, .gelatinous .mass .enclosed .by
.epidermis .and .endodermis
Placozoans .- .CORRECT .ANSWER .-Possibly .simplest .of .all .animals; .each
.contains .only .few .thousand .cells .arranged .into .upper .and .lower .epithelia .that
.sandwwich .an .interior .fluid .crisscrossed .by .network .of .multinucleate .fiber .cells
Annelid .Worms .- .CORRECT .ANSWER .-Phylum .of .worms .have .a .cylindrical
.body .with .distinct .segments .and .a .bilaterian .body .plan
Mollusks .- .CORRECT .ANSWER .-Monophyletic .group .distinguished .by .a .mantle
.which .plays .a .major .role .in .movement .skeleton-building, .breathing, .and
.excretion; .includes .clams, .snails, .and .squid
Gastropods .- .CORRECT .ANSWER .-Mollusks
-->Snails
-->Slugs
Cephaloppods .- .CORRECT .ANSWER .-Monophyletic .group .of .mollusks
-->Squid
-->Cuttlefish
-->Octopus
-->Chambered .nautilus
Distinctive .adaptations-->well-developed .eyes .and .muscular .tentacles .that
.capture .prey .and .sense .the .environment
Bivalves .- .CORRECT .ANSWER .-Mollusks .includes .clams,oysters .mussels, .have
.enclosing .skeleton .two .hard .shells .connected .by .flexible .hinge
Nematodes .- .CORRECT .ANSWER .-Roundworms, .the .most .numerous .of .all
.animals; .a .phylum .of .Ecdysozoa
Arthopoda .- .CORRECT .ANSWER .-Monophyletic .group .of .animals .includes
.insects .and .contains .more .than .half .of .all .known .animal .species .distinguished
.by .segmented .bodies .and .jointed .legs
, Chitin .- .CORRECT .ANSWER .-Modified .polysaccharide .containing .nitrogen
.makes .up .cell .walls .of .fungi .and .hard .exoskeletons .of .arthropods
Insects .- .CORRECT .ANSWER .-Most .diverse .of .four .main .groups .of .arthropoda
Chelicerates .- .CORRECT .ANSWER .-One .of .four .main .groups .of .arthropods
.including .spiders .and .scorpions; .have .pincer-like .claws .and .are .only
.arthropods .lack .antennae
Myriapods .- .CORRECT .ANSWER .-One .of .four .main .groups .of .arrthropds,
.including .centipedsand .millipedes; .distinguished .by .their .many .pairs .of .legs
Crustaceans .- .CORRECT .ANSWER .-One .of .four .main .groups .of .arthropods,
.including .lobsters, .shrimp, .and .crabs; .two .pairs .of .antennae .and .branched .legs
.or .appendages
Metamorphosis .- .CORRECT .ANSWER .-Process .in .some .animals .in .whcih .body
.changes .dramatically .at .key .stages .in .development
Pupa .- .CORRECT .ANSWER .-Quiescent .stage .of .meetamorphosis .in .insects,
.during .which .the .body .tissues .undergo .a .transformation .from .larva .to .an .adult
Spiracles .- .CORRECT .ANSWER .-Opening .in .the .exoskeleton .on .either .side .of
.an .insect's .abdomen .through .which .gases .are .exchanged
Tracheae .- .CORRECT .ANSWER .-Central .airway .leading .to .lungs, .supported .by
.cartilage .rings
Hemichordata .- .CORRECT .ANSWER .-One .of .three .major .phyla .of
.deuterosomes; .includes .acorn .worms .and .preobranchs
Echinodermata .- .CORRECT .ANSWER .-One .of .three .major .phyla .of
.deuterosomes; .five-part .symmetry; .includes .sdea .urchins .and .sea .stars
Chordata .- .CORRECT .ANSWER .-One .of .three .major .phyla .of .deuterostomes,
.includes .vertebrates .and .closely .related .invertebrate .animals .such .as .sea
.squirts
Pharynx .- .CORRECT .ANSWER .-Region .of .throat .that .connects .the .nasal .and
.mouth .cavities; .in .hemichordates, .a .tube .that .connects .the .mouth .and .the
.digestive .tract
Pharyngeal .Slits .- .CORRECT .ANSWER .-Vertical .opening .separated .from .other
.slits .by .stiff .tods .of .protein .in .pharynx .of .hemichordates
Dorsal .Nerve .Cord .- .CORRECT .ANSWER .-Develops .in .a .location .dorsal .to
.notochord, .embryonic .feature
Exam Questions and Answers A+
Graded
When .two .species .compete .for .similar .resources, .resource .partitioning .can
.alter .the .niche .of .the .species .that .compete. .The .figure .shows .an .example .of
.this.
Resource .partitioning .results .in:
A. .individuals .of .each .species .sharing .the .resources .that .they .both .exploit.
B.individuals .of .each .species .hybridizing .in .the .region .of .overlap.
C.a .move .from .the .fundamental .niche .to .the .realized .niche .for .both .species.
D.a .move .from .the .realized .niche .to .the .fundamental .niche .for .both .species. .-
.CORRECT .ANSWER .-C.a .move .from .the .fundamental .niche .to .the .realized
.niche .for .both .species.
Cnidaria .- .CORRECT .ANSWER .-Phylum .chartacterized .by .radial .symmetry, .2
.germ .tissues .in .the .embryo; .a .closed .internal .gastric .cavity, .and .well-
developed .tissues .but .not .organs; .includes .jellyfish, .esea .anemones, .and
.corals
Bilateria .- .CORRECT .ANSWER .-Monophyletic .group .of .animals .with .bilateral
.symmetry
Protostomes .- .CORRECT .ANSWER .-Bilaterian .in .whcih .the .blastopore .first
.opening .to .internal .cavity .of .developing .embryo .becomes .mouth
Deuterostomes .- .CORRECT .ANSWER .-Bilaterian .in .which .the .blastopore, .the
.first .opening .to .the .internal .cavity .of .the .developing .embryo, .becomes .the
.anus
Humans .and .chordates
Choanocytes .- .CORRECT .ANSWER .-Type .of .cell .that .lines .the .interior .surface
.of .a .sponge;have .flagella .and .function .in .nutrition .and .gas .exchange
Mesohyl .- .CORRECT .ANSWER .-Gelatinous .mass .lies .between .interior .and
.exterior .cell .layers .of .sponge .that .contains .some .amoeba-like .cells .that
.function .in .skeleton .formation .and .dispersal .of .nutrients
Eumetazoa .- .CORRECT .ANSWER .-Monophyletic .group .of .all .animals .other .than
.sponges
,Gastric .Cavity .- .CORRECT .ANSWER .-Cindarians, .closed .internal .site .where
.extracellular .digestion .and .excretion .take .place
Epidermis .- .CORRECT .ANSWER .-Mammals, .outer .layer .of .skin, .which .serves .as
.a .water-resistant, .protective .barrier.
Plants, .outermost .layer .of .cells .in .leaves, .young .stems .(lacking .secondary
.growth), .and .roots. .Outer .layer .of .cnidarian .body.
Endodermis .- .CORRECT .ANSWER .-In .plants, .layer .of .cells .surrounding .the
.xylem .and .phloem .at .the .center .of .the .root .that .controls .movement .of .nutrients
.into .xylem
Inner .lining .of .cnidarian .body
Mesoglea .- .CORRECT .ANSWER .-In .cnidareans, .gelatinous .mass .enclosed .by
.epidermis .and .endodermis
Placozoans .- .CORRECT .ANSWER .-Possibly .simplest .of .all .animals; .each
.contains .only .few .thousand .cells .arranged .into .upper .and .lower .epithelia .that
.sandwwich .an .interior .fluid .crisscrossed .by .network .of .multinucleate .fiber .cells
Annelid .Worms .- .CORRECT .ANSWER .-Phylum .of .worms .have .a .cylindrical
.body .with .distinct .segments .and .a .bilaterian .body .plan
Mollusks .- .CORRECT .ANSWER .-Monophyletic .group .distinguished .by .a .mantle
.which .plays .a .major .role .in .movement .skeleton-building, .breathing, .and
.excretion; .includes .clams, .snails, .and .squid
Gastropods .- .CORRECT .ANSWER .-Mollusks
-->Snails
-->Slugs
Cephaloppods .- .CORRECT .ANSWER .-Monophyletic .group .of .mollusks
-->Squid
-->Cuttlefish
-->Octopus
-->Chambered .nautilus
Distinctive .adaptations-->well-developed .eyes .and .muscular .tentacles .that
.capture .prey .and .sense .the .environment
Bivalves .- .CORRECT .ANSWER .-Mollusks .includes .clams,oysters .mussels, .have
.enclosing .skeleton .two .hard .shells .connected .by .flexible .hinge
Nematodes .- .CORRECT .ANSWER .-Roundworms, .the .most .numerous .of .all
.animals; .a .phylum .of .Ecdysozoa
Arthopoda .- .CORRECT .ANSWER .-Monophyletic .group .of .animals .includes
.insects .and .contains .more .than .half .of .all .known .animal .species .distinguished
.by .segmented .bodies .and .jointed .legs
, Chitin .- .CORRECT .ANSWER .-Modified .polysaccharide .containing .nitrogen
.makes .up .cell .walls .of .fungi .and .hard .exoskeletons .of .arthropods
Insects .- .CORRECT .ANSWER .-Most .diverse .of .four .main .groups .of .arthropoda
Chelicerates .- .CORRECT .ANSWER .-One .of .four .main .groups .of .arthropods
.including .spiders .and .scorpions; .have .pincer-like .claws .and .are .only
.arthropods .lack .antennae
Myriapods .- .CORRECT .ANSWER .-One .of .four .main .groups .of .arrthropds,
.including .centipedsand .millipedes; .distinguished .by .their .many .pairs .of .legs
Crustaceans .- .CORRECT .ANSWER .-One .of .four .main .groups .of .arthropods,
.including .lobsters, .shrimp, .and .crabs; .two .pairs .of .antennae .and .branched .legs
.or .appendages
Metamorphosis .- .CORRECT .ANSWER .-Process .in .some .animals .in .whcih .body
.changes .dramatically .at .key .stages .in .development
Pupa .- .CORRECT .ANSWER .-Quiescent .stage .of .meetamorphosis .in .insects,
.during .which .the .body .tissues .undergo .a .transformation .from .larva .to .an .adult
Spiracles .- .CORRECT .ANSWER .-Opening .in .the .exoskeleton .on .either .side .of
.an .insect's .abdomen .through .which .gases .are .exchanged
Tracheae .- .CORRECT .ANSWER .-Central .airway .leading .to .lungs, .supported .by
.cartilage .rings
Hemichordata .- .CORRECT .ANSWER .-One .of .three .major .phyla .of
.deuterosomes; .includes .acorn .worms .and .preobranchs
Echinodermata .- .CORRECT .ANSWER .-One .of .three .major .phyla .of
.deuterosomes; .five-part .symmetry; .includes .sdea .urchins .and .sea .stars
Chordata .- .CORRECT .ANSWER .-One .of .three .major .phyla .of .deuterostomes,
.includes .vertebrates .and .closely .related .invertebrate .animals .such .as .sea
.squirts
Pharynx .- .CORRECT .ANSWER .-Region .of .throat .that .connects .the .nasal .and
.mouth .cavities; .in .hemichordates, .a .tube .that .connects .the .mouth .and .the
.digestive .tract
Pharyngeal .Slits .- .CORRECT .ANSWER .-Vertical .opening .separated .from .other
.slits .by .stiff .tods .of .protein .in .pharynx .of .hemichordates
Dorsal .Nerve .Cord .- .CORRECT .ANSWER .-Develops .in .a .location .dorsal .to
.notochord, .embryonic .feature
