Animals Flashcards
Cnidaria
Hydra, jellyfish, corals
Porifera
Sponges
Hydrozoa
Class
Polyp and medusa
Scyphozoa
Class
Jellyfish
Medusa only
Anthozoa
Class
Corals
Polyps
Platyhelminthes
Flatworms, flukes, tapeworms
No circulatory system
Turbellaria
Class under Platyhelminthes
Free living,predators, toxin, asexual reproduction
Trematoda
Class under Platyhelminthes
Parasite, more than one host
Eg schistosona
Cestoda
Class under Platyhelminthes
Parasites
Eg tapeworm
Mollusca
Phylum Clams, snails, squids, octopus Shell Mantle Foot Radula
Gastropoda
Class under mollusca
” stomach feet”
Snails, slugs, sea slugs
Posses torsion
Bivalvia
Class under mollusca "Two shells" Clams, oysters, mussels Parasites as babies Cuspension feeders, no radula
Cephalopoda
Class under mollusca
“Head foot”
Octopus, squid, hautilus
Mammals
- Mammary
- Fur or hair (keratin)
- Endotherms, mostly homeothermic
- 4 chamber heart
Monotremes
Class mammalia Order montremata -lay eggs -mammary glands but no teats 2 families 3 species
Marsupials
Class mammalia Order marsupialia - marsupium (pouch) - brief gestation. Give births to tiny underdeveloped offspring -mammary (teats) Only 270 species
Eutherian (placental mammals)
Class mammalia
Order eutheria
5000 species
-all develop within uterus and nourish by a placenta
Benefits of retaining the embryo inside body
- Protection
- Nourishment
- Develop at a constant warm temperature
- Portable
Adaptations for flights
- Wings
- Elongated keel
- Light weight
Skeleton(bones filled w/ air)
No teeth
No bladder
Females have only one ovary
Gonads shrinks
Phylum Chordata
- Dorsal hollow nerve cord (spinal cord)
- Pharyngeal gill slits - allows use for breathing, and often for feeding
- Post anal tail - usually musculartor locomotion
- Notochord - skeleton structure
