Ch. 19- Both Water and Land Animals Flashcards
Domain Eukarya
- Animals
- Protists
- Plants
- Fungi
Plants
- multicellular
- make their food thru photosynthesis
Animals
- multicellular
- chemoheterotrophs
- acquire nutrients from an external source
- ingest (eat) their food and digest it internally
Fungi
- multicellular
- digest their food externally and absorb the breakdown
Invertebrates
Lack an internal skeleton or endoskeleton, of bone or cartilage.
Vertebrates
Animals with an endoskeleton
Three Germ Layers
(1) ectoderm
(2) mesoderm
(3) endoderm
Germ layers
Cells that give rise to all the other tissues and organs in an animal’s body
Radial symmetry
- the animal is organized circular
- similar to a wheel.
Bilateral symmetry
- left and right halves
- longitudinal cut down the center of the animal
Cephalization
Localization of a brain and specialized sensory organs at the anterior end of an animal
Segmentation
Repetition of body parts along the length of the body
Flatworms
(phylum Platyhelminthes)
- bilateral symmetry