Bio-182 Exam 3 Gcu| Wit Well-Illustrated
Questions And Answers| Approved And
Verified By Expert| Newly Updated 2025.
What are the 5 key characteristics of animals that make them efficient consumers? - answer ✔✔
- heterotrophs
-tissues
-digestive system
-nerve and muscle cells
-move, detect, capture prey
What are animal cells supported by instead of cell walls? - answer ✔✔ structural proteins such as
collagen
A succession of cell division without growth between divisions - answer ✔✔ cleavage
Hollow ball of cells - answer ✔✔ blastula
Cleavage leads to the formation of what? - answer ✔✔ blastula
A blatula will undergo what? - answer ✔✔ gastrulation
What is a gastrula? - answer ✔✔ multi- layered embryo
What is a larva? - answer ✔✔ sexually immature and morphologically distinct from the adult
After what process do larvae become juveniles that resemble adults, but are sexually immature? -
answer ✔✔ metamorphosis
What are sets of morphological and developmental traits? - answer ✔✔ body plans
What group lacks symmetry? - answer ✔✔ sponges
What animals are often radially symmetrical - answer ✔✔ -sessile
-planktonic
What are the 2 main characteristics of bilateral animals - answer ✔✔ -ability to move actively
-have a cns
What lacks tissues? - answer ✔✔ sponges
, What germ layer gives rise to the outer covering and central nervous system? - answer ✔✔
ectoderm
What germ layer lines the blind pouch (archenteron) that will form the gut, and gives rise to the
lining fo the gi tract and organs - answer ✔✔ endoderm
What germ layer gives rise to muscles and most organs? - answer ✔✔ mesoderm
What is a cnidarian an example of? - answer ✔✔ diploblastic animal
What are all bilaterally symmetrical animals an example of? - answer ✔✔ triploblastic animals
What is a fluid or air- filled space between the gi tract and outer body wall? - answer ✔✔ body
cavity
What are the 3 major functions of the body cavity? - answer ✔✔ -cushion of suspended organs
-acts as a skeleton that muscles can work against
-enables organs to grow and move independently of outer body wall
What is a body cavity surrounded by tissues derived from the mesoderm? - answer ✔✔ coelom
What is a body cavity formed between the mess and end-derm - answer ✔✔ hemocoel
What dies hemolymph do? - answer ✔✔ transport nutrients and waste throughout the body
cavity
Some triploblastic animals are what? - answer ✔✔ compact animals
What are the 2 developmental modes? - answer ✔✔ -protostome
-deuterostome
What do the developmental modes differ by? - answer ✔✔ -cleavage
-coelom
-formation
-fate of blastopore
What kind of cleavage does protostome development have? - answer ✔✔ spiral and determinant
cleavage
What kind of cleavage does deuterostome development have? - answer ✔✔ radial and
indeterminate cleavage
What kind of cleavage are planes of cell division diagonal to the vertical axis of the embryo? -
answer ✔✔ spiral
Questions And Answers| Approved And
Verified By Expert| Newly Updated 2025.
What are the 5 key characteristics of animals that make them efficient consumers? - answer ✔✔
- heterotrophs
-tissues
-digestive system
-nerve and muscle cells
-move, detect, capture prey
What are animal cells supported by instead of cell walls? - answer ✔✔ structural proteins such as
collagen
A succession of cell division without growth between divisions - answer ✔✔ cleavage
Hollow ball of cells - answer ✔✔ blastula
Cleavage leads to the formation of what? - answer ✔✔ blastula
A blatula will undergo what? - answer ✔✔ gastrulation
What is a gastrula? - answer ✔✔ multi- layered embryo
What is a larva? - answer ✔✔ sexually immature and morphologically distinct from the adult
After what process do larvae become juveniles that resemble adults, but are sexually immature? -
answer ✔✔ metamorphosis
What are sets of morphological and developmental traits? - answer ✔✔ body plans
What group lacks symmetry? - answer ✔✔ sponges
What animals are often radially symmetrical - answer ✔✔ -sessile
-planktonic
What are the 2 main characteristics of bilateral animals - answer ✔✔ -ability to move actively
-have a cns
What lacks tissues? - answer ✔✔ sponges
, What germ layer gives rise to the outer covering and central nervous system? - answer ✔✔
ectoderm
What germ layer lines the blind pouch (archenteron) that will form the gut, and gives rise to the
lining fo the gi tract and organs - answer ✔✔ endoderm
What germ layer gives rise to muscles and most organs? - answer ✔✔ mesoderm
What is a cnidarian an example of? - answer ✔✔ diploblastic animal
What are all bilaterally symmetrical animals an example of? - answer ✔✔ triploblastic animals
What is a fluid or air- filled space between the gi tract and outer body wall? - answer ✔✔ body
cavity
What are the 3 major functions of the body cavity? - answer ✔✔ -cushion of suspended organs
-acts as a skeleton that muscles can work against
-enables organs to grow and move independently of outer body wall
What is a body cavity surrounded by tissues derived from the mesoderm? - answer ✔✔ coelom
What is a body cavity formed between the mess and end-derm - answer ✔✔ hemocoel
What dies hemolymph do? - answer ✔✔ transport nutrients and waste throughout the body
cavity
Some triploblastic animals are what? - answer ✔✔ compact animals
What are the 2 developmental modes? - answer ✔✔ -protostome
-deuterostome
What do the developmental modes differ by? - answer ✔✔ -cleavage
-coelom
-formation
-fate of blastopore
What kind of cleavage does protostome development have? - answer ✔✔ spiral and determinant
cleavage
What kind of cleavage does deuterostome development have? - answer ✔✔ radial and
indeterminate cleavage
What kind of cleavage are planes of cell division diagonal to the vertical axis of the embryo? -
answer ✔✔ spiral
