Animal Diversity and Form
This organelle is the powerhouse of the cell
Mitochondria
Another name for secondary loss
Evolutionary reversal
Having both male and female reproductive parts
Hermaphrodism
The name of the opening of a sponge
Osculum
Two
Three types of symmetry
None, radial, bilateral
Definition of a phylogeny
Hypothesis about relationships among taxonomic groups
Name the three axes of an animal
Central, Anteroposterior, Left-right
Three structures that can allow Protist mobility
Cilia, Pseudopod, Flagella
Describe the nervous system found in a Cnidarian
Nerve net
Time period with the most rapid evolution of animal phyla and diversity
Cambrain
Define a clade
Any branch or lineage - lines in a cladogram
Difference between fission and fragmentation
Fission results in two similar sized organisms, fragmentation does not
The Porifera class Calcarea is so named because its skeleton is typically made of this.
Calcite
This Cnidarian class contains the true jellyfish
Scyphozoa
Two types of segmentation
Homomeric - segments contain similar elements
Heteromeric - segments differ
Order of Linnean classification from broadest to most specific
Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species
This type of internal fertilization involves eggs being laid outside of the parent's body
Oviparity
These Protozoa serve as diagnostic fossils
Radiolarians
This Cnidarian class has no medusa stage and contains corals and anemones
Anthozoa
Typical shape of animals in water
Fusiform
Define the principle of parsimony
The simplest explanation is the most likely
After fertilization, the zygote rapidly divides and forms this hollow ball
Blastula
This Porifera class lacks common cell types found in other classes
Homoscleromorpha
By shape - cydippids, lobates, and beroids