Chapter 32 Flashcards
What is the cell process that leads to cell specialization in animals?
differentiation
What occurs immediately following fertilization?
cleavage
Ectoderm : Skin :: Mesoderm : ___
vertebrate
phylogenetic diagrams illustrate ___.
evolutionary relationships between organisms
A fluid-filled cavity that forms following gastrulation is called ___.
coelom
An animal that is able to produce both male and female gametes is called a/an ___.
hermaphrodite
Animals that undergo indirect development begin life as ___, while animals that undergo direct development begin as ___.
larva; nymphs
Phylogenetic diagrams illustrate ___.
evolutionary relationships between organisms
A fluid-filled cavity that forms following gastrulation is called a ___.
coelom
An animal that is able to produce both male and female gamets is called a/an ___.
hermaphrodite
Animals that undergo indirect development begin life as ___, while animals that undergo direct development begin as ___.
larva; nymphs
List some parts of an animal’s morphology.
shape, symmetry, organization
Name some vertebrates.
toads, birds, puppies
Name some functions of the circulatory system.
carry nutrients to tissues; carry O2 to tissues; carry waste to the excretory system
Organisms in which phylum are composed of only two embryonic germ layers?
ctenophora
The deep cavity that becomes the gut during embryonic development is the ___.
archenteron
The order from inside to outside in which the three germ layers are organized
endoderm, mesoderm, ectoderm
Tissues that arise from the endoderm are the ___.
digestive, respiratory, and reproductive
Animals that have no body cavity and have a solid interior are called ___.
acoelomates
The fate of the blastopore in a deuterostome is to become the ___.
anus
When the path or fate of a cell is fixed late in its development, the cleavage is said to be ___.
indeterminate
The process of coelom formation in protostomes is called ___.
schizocoely
Describe a gastrula?
a multilayered embryo
An animal exhibiting radial symmetry
has a distinct top and bottom, but no front, back right, or left
Which phylum of invertebrates has no true tissues but cells speciallzed for specific funtions?
porifera
Which phylum is a squid in?
mollusca
Which phylum is a jellyfish in?
cnidaria
Which phylum is a flatworm in?
platyhelminthes
Which phylum is a sea star in?
echinodermata
Which phylum is a segmented worm in?
annelida
Which phylum is a crab in?
arthropoda
Which phylum is a roundworm in?
nematoda
Which phylum is a sponge in?
porifera
