Animal Diversity Flashcards
Animals are classified under which DOMAIN?
Domain Eukarya
What KINGDOM are animals under?
Kingdom Animalia
Under what CLADE are animals under?
clade Metazoa
The phylogenetic tree divides the Metazoa clade in what TWO major clade?
- Phylum Porifera, The sponges 2. Phylum Eumetazoa, All other animals
What leads biologist to classify sponges in their own phyla?
Sponges have a unique body forms.
What is unique about sponges that sets them seperately from other phylas?
They lack true tissue and organs They have no body symmetry They are sessile No mouth or anus
What is the symmetry of Phylum Porifera (sponges)?
Asymmetrical (no symmetry)
What is the tissue organization of spnges?
No tissue, aggregate of different cells, no body layers
Do sponges have a body cavity?
No body cavity
Do sponges have Digestive opening?
No, no mouth or anus
Do sponges have a Circulatory or Nervous system?
No
What kind of habitat do sponges have?
Marine habitat
What kind of Excretory system do sponges have?
pores and channels for circulation of water, oxygen, nutrients and to remove waste.
What kind of support system do sponges have?
Silica or calcium-carbonate based spicules
Do sponges have segmentation, appendages or locomotion?
No, No, No
What is an organism was used for Phylum Cnidaria in class?
Hydras
What are the TWO body forms that Phylum Cnidarians have in their life cycles?
- Medusa (umbrella-like, free swimming stage) 2. Polyp (cylindrical)
What is the symmetry of a Hydra?
radial symetrical
A Blastopore becomes what in the protostomes and what in deuterosomes?
Mouth in protostomes Anus in deuterosomes
What are the two major groups within the Protostomes?
Lophotrochozoa Ecdysozoa
Under the Protostomes what is a Lophotrochozoa?
They are named for trochophore larvae found in annelids and molluscs.
Under the Protostomes what is an Ecdysozoa?
animals in this group exhibit molting or the shedding of their outer body cover.
What is the outer covering called in nematodes?
Cuticle
What is the outer covering called in arthropods?
exoskeleton
What are the two clades under the Phylum Metazoa?
Eumetazoa
Porifera
How do we devide the clade Eumetazoa?
Radial symmetry and Bilateral symmetry
What is the only radial symmetrical clade?
Cnidaria
What is the name of the clade for animals with bilatiral symmetry (you better not get this wrong!!!)?
Clade Bilateria
When looking at Clade Bilateria what three clades come out of it?
How are they seperated?
LED- Lophotrochozoa (LOW-FO-TRO-KO-ZOA), Ecdysozoa ( EK-DIE-SOZOA), Deuterostomia (DU-TERO-STOMIA)
LE-D
What two phylums are under clade Deuterostomia?
Echinodermata (Starfish), Chordata (Pig, Lancelet)
What are the two phylums under the clade Ecdysozoa?
Nematoda, Arthropoda
What are the three phylums under the clade Lophotrochozoa?
How are they seperated?
PAM- Platyhelminthes (Flat worms) , Annelida (Earthworm), Mollusca (Clams)
P- AM
What are the two phylums under clade Ectosozoa?
Nematoda (Ascaris Roundworms), Arthropods (Grasshopper)
What does an Acoelomate consist of (2)?
3 layered bodies without a body cavity.
Tissue from the mesoderm fills the space where cavity might be (tissue layers closely packed on one another).
What does a Pseudocoelomate consist of?
3 layered bodies with a cavity between the endoderm and medoderm
What does a Coelomate consist of?
How are the guts of a Coelomate organism suspended?
3 layered bodies with a coelom (cavity) WITHIN the mesoderm (completely surrounded by mesoderm)
They are suspended by Mesodermal membranes within body cavity
