4/27/25, 9:50
AM
BIO 242 EXAM QUESTIONS AND ANSWERS WITH COMPLETE
SOLUTIONS VERIFIED GRADED A++ LATEST RELEASE 2025
Save
Practice questions for this set
Learn 1/7 Study using Learn
series of genes that controls the differentiation of cells and tissues in an embryo
Select the correct term
1Hox genes 2Herc2 gene
3Gap genes 4Segment polarity genes
Don't know?
Terms in this set (91)
Animal Characteristics multicellular, eukaryotes, heterotrophs, tissues
that develop from embryonic layers, no cell
wall, reproduce sexually, digest food
internally, hox genes
1/
9
, 4/27/25, 9:50
AM
Hox genes series of genes that controls the differentiation of
cells and tissues in an embryo
Tissues Groups of cells that are similar in structure and
function
Eumetazoa clade of animals with true tissues e.g. all animals
except proferia (sponges)
Diploblastic animals Have only two germ layers, the ectoderm and
the endoderm, and lack true digestive
system.
Triploblastic animals Have three germ layers: ectoderm, mesoderm
(gives rise to muscles and organs),
endoderm.
body cavity Cushion the suspended organs, fluid in the body
cavity act as skeleton for
support, internal organs can grow and move
independently of outer body wall.
coelom fluid-filled body cavity lined with mesoderm
hemocoel The primary body cavity of most
invertebrates, containing circulatory fluid.
Develops between mesodermal and
endoderm
Bilateria Members of the branch of eumetazoans possessing
bilateral symmetry.
A burst of evolutionary origins when most of
Cambrian explosion the major body plans of animals appeared in
a relatively brief time in geologic history;
recorded in the fossil record about 545 to
525 million years ago.
How many phyla 32-33. Tell this by hox genes, rrna, proteins,
are in the animal mitochondria genes, morphological
kingdom? differences
Sister group to all other sponges
animals
3 major classes of Deuterostimia, lophor
bilaterian animals
Deuterostomes Animals in which the blastopore becomes the
anus during early embryonic development.
Eg. Acorn worms
2/
9
AM
BIO 242 EXAM QUESTIONS AND ANSWERS WITH COMPLETE
SOLUTIONS VERIFIED GRADED A++ LATEST RELEASE 2025
Save
Practice questions for this set
Learn 1/7 Study using Learn
series of genes that controls the differentiation of cells and tissues in an embryo
Select the correct term
1Hox genes 2Herc2 gene
3Gap genes 4Segment polarity genes
Don't know?
Terms in this set (91)
Animal Characteristics multicellular, eukaryotes, heterotrophs, tissues
that develop from embryonic layers, no cell
wall, reproduce sexually, digest food
internally, hox genes
1/
9
, 4/27/25, 9:50
AM
Hox genes series of genes that controls the differentiation of
cells and tissues in an embryo
Tissues Groups of cells that are similar in structure and
function
Eumetazoa clade of animals with true tissues e.g. all animals
except proferia (sponges)
Diploblastic animals Have only two germ layers, the ectoderm and
the endoderm, and lack true digestive
system.
Triploblastic animals Have three germ layers: ectoderm, mesoderm
(gives rise to muscles and organs),
endoderm.
body cavity Cushion the suspended organs, fluid in the body
cavity act as skeleton for
support, internal organs can grow and move
independently of outer body wall.
coelom fluid-filled body cavity lined with mesoderm
hemocoel The primary body cavity of most
invertebrates, containing circulatory fluid.
Develops between mesodermal and
endoderm
Bilateria Members of the branch of eumetazoans possessing
bilateral symmetry.
A burst of evolutionary origins when most of
Cambrian explosion the major body plans of animals appeared in
a relatively brief time in geologic history;
recorded in the fossil record about 545 to
525 million years ago.
How many phyla 32-33. Tell this by hox genes, rrna, proteins,
are in the animal mitochondria genes, morphological
kingdom? differences
Sister group to all other sponges
animals
3 major classes of Deuterostimia, lophor
bilaterian animals
Deuterostomes Animals in which the blastopore becomes the
anus during early embryonic development.
Eg. Acorn worms
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9
