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BIO 172 UH MANOA EXAM 2 2026
QUESTIONS AND ANSWERS | A+
GRADED | WITH EXPERT SOLUTIONS
Animals - correct answer -Multicellular eukaryotes
Heterotrophs: Ingest their food
Lack Cell Walls
Body held together by structural proteins
Collagen - correct answer -Make up connective tissues (fibers)
Flexible and high tensile (stretching)
Skin - correct answer -Dense irregular arrangement of collagen
Ligament - correct answer -Collagen arranged in sheets
(Connects Bones)
Tendon - correct answer -Cable-like arrangement of collagen
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(Connects muscle to bone)
Zygote - correct answer -Fertilized egg
(Sperm+Egg=Zygote)
Undergoes rapid cell division called cleavage
Germ Layers - correct answer -Give rise to tissues and organs of
animal embryo
Blastula - correct answer -Cell that has undergone many cell
cleavages
Hollow blastula undergoes gastrulation, forming gastrula (has
layers of embryonic tissues)
Ectoderm - correct answer -Germ layer covering embryo surface
Endoderm - correct answer -Innermost germ layer and lines
developing digestive tube (aka=Archenteron)
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Diploblastic - correct answer -Animals that exhibit both ectoderm
and endoderm in the embryo
(Corals, jellyfish)
Triploblastic - correct answer -Animals that have intervening
Mesoderm layer (bilaterians)
Bilaterians - correct answer -All Multicellular animals other than
sponges and cnidarians
Exhibit bilateral symmetry and cephalization
Cephalization - correct answer -Organization of senses and
locomotion toward head region
Larva - correct answer -Sexually immature and anatomically
distinct from the adult, undergoes metamorphosis
Juvenile - correct answer -Resembles an adult, but not sexually
mature
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Cambrian explosion - correct answer -535-525 million years ago,
marks earliest fossil appearance of many animal major groups
Hox Genes - correct answer -Control the development of body
form (Hox Gene "__" can tell to form an arm)
Protosome - correct answer -Cell proliferation by spiral cleavage
Coelom forms within the middle tissue germ layer
Initial opening of gut becomes the mouth
Deuterostome - correct answer -Cell proliferation by radial
cleavage
Coelom forms from outpocket of the middle tissue germ layer
Initial opening of gut becomes the anus
Coelom - correct answer -Body cavity surrounding the gut
BIO 172 UH MANOA EXAM 2 2026
QUESTIONS AND ANSWERS | A+
GRADED | WITH EXPERT SOLUTIONS
Animals - correct answer -Multicellular eukaryotes
Heterotrophs: Ingest their food
Lack Cell Walls
Body held together by structural proteins
Collagen - correct answer -Make up connective tissues (fibers)
Flexible and high tensile (stretching)
Skin - correct answer -Dense irregular arrangement of collagen
Ligament - correct answer -Collagen arranged in sheets
(Connects Bones)
Tendon - correct answer -Cable-like arrangement of collagen
, Page | 2
(Connects muscle to bone)
Zygote - correct answer -Fertilized egg
(Sperm+Egg=Zygote)
Undergoes rapid cell division called cleavage
Germ Layers - correct answer -Give rise to tissues and organs of
animal embryo
Blastula - correct answer -Cell that has undergone many cell
cleavages
Hollow blastula undergoes gastrulation, forming gastrula (has
layers of embryonic tissues)
Ectoderm - correct answer -Germ layer covering embryo surface
Endoderm - correct answer -Innermost germ layer and lines
developing digestive tube (aka=Archenteron)
, Page | 3
Diploblastic - correct answer -Animals that exhibit both ectoderm
and endoderm in the embryo
(Corals, jellyfish)
Triploblastic - correct answer -Animals that have intervening
Mesoderm layer (bilaterians)
Bilaterians - correct answer -All Multicellular animals other than
sponges and cnidarians
Exhibit bilateral symmetry and cephalization
Cephalization - correct answer -Organization of senses and
locomotion toward head region
Larva - correct answer -Sexually immature and anatomically
distinct from the adult, undergoes metamorphosis
Juvenile - correct answer -Resembles an adult, but not sexually
mature
, Page | 4
Cambrian explosion - correct answer -535-525 million years ago,
marks earliest fossil appearance of many animal major groups
Hox Genes - correct answer -Control the development of body
form (Hox Gene "__" can tell to form an arm)
Protosome - correct answer -Cell proliferation by spiral cleavage
Coelom forms within the middle tissue germ layer
Initial opening of gut becomes the mouth
Deuterostome - correct answer -Cell proliferation by radial
cleavage
Coelom forms from outpocket of the middle tissue germ layer
Initial opening of gut becomes the anus
Coelom - correct answer -Body cavity surrounding the gut
