BIO 172 UH Manoa Exam 2 Ques ons and answers
Updated 100% verified correct NEW!!
Animals - Ans Mul cellular eukaryotes
Heterotrophs: Ingest their food
Lack Cell Walls
Body held together by structural proteins
Collagen - Ans Make up connec ve ssues (fibers)
Flexible and high tensile (stretching)
Skin - Ans Dense irregular arrangement of collagen
Ligament - Ans Collagen arranged in sheets
(Connects Bones)
Tendon - Ans Cable-like arrangement of collagen
(Connects muscle to bone)
Zygote - Ans Fer lized egg
(Sperm+Egg=Zygote)
Undergoes rapid cell division called cleavage
Germ Layers - Ans Give rise to ssues and organs of animal embryo
,Blastula - Ans Cell that has undergone many cell cleavages
Hollow blastula undergoes gastrula on, forming gastrula (has layers of embryonic ssues)
Ectoderm - Ans Germ layer covering embryo surface
Endoderm - Ans Innermost germ layer and lines developing diges ve tube (aka=Archenteron)
Diploblas c - Ans Animals that exhibit both ectoderm and endoderm in the embryo
(Corals, jellyfish)
Triploblas c - Ans Animals that have intervening Mesoderm layer (bilaterians)
Bilaterians - Ans All Mul cellular animals other than sponges and cnidarians
Exhibit bilateral symmetry and cephaliza on
Cephaliza on - Ans Organiza on of senses and locomo on toward head region
Larva - Ans Sexually immature and anatomically dis nct from the adult, undergoes
metamorphosis
Juvenile - Ans Resembles an adult, but not sexually mature
Cambrian explosion - Ans 535-525 million years ago, marks earliest fossil appearance of many
animal major groups
Hox Genes - Ans Control the development of body form (Hox Gene "__" can tell to form an
arm)
, Protosome - Ans Cell prolifera on by spiral cleavage
Coelom forms within the middle ssue germ layer
Ini al opening of gut becomes the mouth
Deuterostome - Ans Cell prolifera on by radial cleavage
Coelom forms from outpocket of the middle ssue germ layer
Ini al opening of gut becomes the anus
Coelom - Ans Body cavity surrounding the gut
Sessile - Ans Do not exhibit locomo on
(Sponges)
Collar Cells - Ans Flagella bearing cells that create water currents that move through the body
of the sponge
Spicules - Ans Tiny calcium/silica structures
Sponges (Phylum:Porifera) - Ans Hermaphrodites (release sperm into environment)
Jellyfish, Anemones, Corals
(Phylum: Cnidaria) - Ans Have radial symmetry
Possess two specialized cell layers ( ssues) and nerve cells
Two Body Forms: Sessile polyp and free swimming medusa
Updated 100% verified correct NEW!!
Animals - Ans Mul cellular eukaryotes
Heterotrophs: Ingest their food
Lack Cell Walls
Body held together by structural proteins
Collagen - Ans Make up connec ve ssues (fibers)
Flexible and high tensile (stretching)
Skin - Ans Dense irregular arrangement of collagen
Ligament - Ans Collagen arranged in sheets
(Connects Bones)
Tendon - Ans Cable-like arrangement of collagen
(Connects muscle to bone)
Zygote - Ans Fer lized egg
(Sperm+Egg=Zygote)
Undergoes rapid cell division called cleavage
Germ Layers - Ans Give rise to ssues and organs of animal embryo
,Blastula - Ans Cell that has undergone many cell cleavages
Hollow blastula undergoes gastrula on, forming gastrula (has layers of embryonic ssues)
Ectoderm - Ans Germ layer covering embryo surface
Endoderm - Ans Innermost germ layer and lines developing diges ve tube (aka=Archenteron)
Diploblas c - Ans Animals that exhibit both ectoderm and endoderm in the embryo
(Corals, jellyfish)
Triploblas c - Ans Animals that have intervening Mesoderm layer (bilaterians)
Bilaterians - Ans All Mul cellular animals other than sponges and cnidarians
Exhibit bilateral symmetry and cephaliza on
Cephaliza on - Ans Organiza on of senses and locomo on toward head region
Larva - Ans Sexually immature and anatomically dis nct from the adult, undergoes
metamorphosis
Juvenile - Ans Resembles an adult, but not sexually mature
Cambrian explosion - Ans 535-525 million years ago, marks earliest fossil appearance of many
animal major groups
Hox Genes - Ans Control the development of body form (Hox Gene "__" can tell to form an
arm)
, Protosome - Ans Cell prolifera on by spiral cleavage
Coelom forms within the middle ssue germ layer
Ini al opening of gut becomes the mouth
Deuterostome - Ans Cell prolifera on by radial cleavage
Coelom forms from outpocket of the middle ssue germ layer
Ini al opening of gut becomes the anus
Coelom - Ans Body cavity surrounding the gut
Sessile - Ans Do not exhibit locomo on
(Sponges)
Collar Cells - Ans Flagella bearing cells that create water currents that move through the body
of the sponge
Spicules - Ans Tiny calcium/silica structures
Sponges (Phylum:Porifera) - Ans Hermaphrodites (release sperm into environment)
Jellyfish, Anemones, Corals
(Phylum: Cnidaria) - Ans Have radial symmetry
Possess two specialized cell layers ( ssues) and nerve cells
Two Body Forms: Sessile polyp and free swimming medusa
