Bio 142 Animal/Anat Questions And
Answers Latest 2026 Update!!!
Hollow ball of cells formed in early animal
Blastula
development
Gastrula Forms during gastrulation
Blastula folds inward and creates germ layers
How does gastrulation work
(ectoderm, mesoderm, and endoderm)
Features of geologic eras
Protostomes - initial opening (blastopore)
Protostomes vs deuterostomes becomes mouth
Deuterostomes - blastopore becomes anus
Coelem Fluid filled cavity lined by mesoderm tissue
Basic animal phylogeny
Animal
Radial symmetry - can be cut from any angle
Types of symmetry
Bilateral symmetry -
Major tissue types + function
How does surface area affect the function of
body systems
Endotherm - internal metabolism regulates body
temp
Ectotherms - relies on external heat sources
Endotherm vs ectotherm vs poikliotherm vs
homeotherm Poikliotherm - body temp varies with
environment
Homeotherm - maintains relatively constant
body temp
Answers Latest 2026 Update!!!
Hollow ball of cells formed in early animal
Blastula
development
Gastrula Forms during gastrulation
Blastula folds inward and creates germ layers
How does gastrulation work
(ectoderm, mesoderm, and endoderm)
Features of geologic eras
Protostomes - initial opening (blastopore)
Protostomes vs deuterostomes becomes mouth
Deuterostomes - blastopore becomes anus
Coelem Fluid filled cavity lined by mesoderm tissue
Basic animal phylogeny
Animal
Radial symmetry - can be cut from any angle
Types of symmetry
Bilateral symmetry -
Major tissue types + function
How does surface area affect the function of
body systems
Endotherm - internal metabolism regulates body
temp
Ectotherms - relies on external heat sources
Endotherm vs ectotherm vs poikliotherm vs
homeotherm Poikliotherm - body temp varies with
environment
Homeotherm - maintains relatively constant
body temp
