BIO 172 UH Manoa Exam 2 Questions & Well
Elaborated Answers, | Already Verified Test| Latest
Update 2025/26
Animals -CORRECTANSWER Multicellular eukaryotes
Heterotrophs: Ingest their food
Lack Cell Walls
Body held together by structural proteins
Collagen -CORRECTANSWER Make up connective tissues (fibers)
Flexible and high tensile (stretching)
Skin -CORRECTANSWER Dense irregular arrangement of collagen
Ligament -CORRECTANSWER Collagen arranged in sheets
(Connects Bones)
Tendon -CORRECTANSWER Cable-like arrangement of collagen
(Connects muscle to bone)
Zygote -CORRECTANSWER Fertilized egg
(Sperm+Egg=Zygote)
Undergoes rapid cell division called cleavage
,Germ Layers -CORRECTANSWER Give rise to tissues and organs of animal embryo
Blastula -CORRECTANSWER Cell that has undergone many cell cleavages
Hollow blastula undergoes gastrulation, forming gastrula (has layers of embryonic
tissues)
Ectoderm -CORRECTANSWER Germ layer covering embryo surface
Endoderm -CORRECTANSWER Innermost germ layer and lines developing digestive
tube (aka=Archenteron)
Diploblastic -CORRECTANSWER Animals that exhibit both ectoderm and endoderm in
the embryo
(Corals, jellyfish)
Triploblastic -CORRECTANSWER Animals that have intervening Mesoderm layer
(bilaterians)
Bilaterians -CORRECTANSWER All Multicellular animals other than sponges and
cnidarians
Exhibit bilateral symmetry and cephalization
, Cephalization -CORRECTANSWER Organization of senses and locomotion toward
head region
Larva -CORRECTANSWER Sexually immature and anatomically distinct from the adult,
undergoes metamorphosis
Juvenile -CORRECTANSWER Resembles an adult, but not sexually mature
Cambrian explosion -CORRECTANSWER 535-525 million years ago, marks earliest
fossil appearance of many animal major groups
Hox Genes -CORRECTANSWER Control the development of body form (Hox Gene
"__" can tell to form an arm)
Protosome -CORRECTANSWER Cell proliferation by spiral cleavage
Coelom forms within the middle tissue germ layer
Initial opening of gut becomes the mouth
Deuterostome -CORRECTANSWER Cell proliferation by radial cleavage
Coelom forms from outpocket of the middle tissue germ layer
Initial opening of gut becomes the anus
Coelom -CORRECTANSWER Body cavity surrounding the gut
Elaborated Answers, | Already Verified Test| Latest
Update 2025/26
Animals -CORRECTANSWER Multicellular eukaryotes
Heterotrophs: Ingest their food
Lack Cell Walls
Body held together by structural proteins
Collagen -CORRECTANSWER Make up connective tissues (fibers)
Flexible and high tensile (stretching)
Skin -CORRECTANSWER Dense irregular arrangement of collagen
Ligament -CORRECTANSWER Collagen arranged in sheets
(Connects Bones)
Tendon -CORRECTANSWER Cable-like arrangement of collagen
(Connects muscle to bone)
Zygote -CORRECTANSWER Fertilized egg
(Sperm+Egg=Zygote)
Undergoes rapid cell division called cleavage
,Germ Layers -CORRECTANSWER Give rise to tissues and organs of animal embryo
Blastula -CORRECTANSWER Cell that has undergone many cell cleavages
Hollow blastula undergoes gastrulation, forming gastrula (has layers of embryonic
tissues)
Ectoderm -CORRECTANSWER Germ layer covering embryo surface
Endoderm -CORRECTANSWER Innermost germ layer and lines developing digestive
tube (aka=Archenteron)
Diploblastic -CORRECTANSWER Animals that exhibit both ectoderm and endoderm in
the embryo
(Corals, jellyfish)
Triploblastic -CORRECTANSWER Animals that have intervening Mesoderm layer
(bilaterians)
Bilaterians -CORRECTANSWER All Multicellular animals other than sponges and
cnidarians
Exhibit bilateral symmetry and cephalization
, Cephalization -CORRECTANSWER Organization of senses and locomotion toward
head region
Larva -CORRECTANSWER Sexually immature and anatomically distinct from the adult,
undergoes metamorphosis
Juvenile -CORRECTANSWER Resembles an adult, but not sexually mature
Cambrian explosion -CORRECTANSWER 535-525 million years ago, marks earliest
fossil appearance of many animal major groups
Hox Genes -CORRECTANSWER Control the development of body form (Hox Gene
"__" can tell to form an arm)
Protosome -CORRECTANSWER Cell proliferation by spiral cleavage
Coelom forms within the middle tissue germ layer
Initial opening of gut becomes the mouth
Deuterostome -CORRECTANSWER Cell proliferation by radial cleavage
Coelom forms from outpocket of the middle tissue germ layer
Initial opening of gut becomes the anus
Coelom -CORRECTANSWER Body cavity surrounding the gut
