Animals

All animal cells are eukaryotic. Animals are multicellular, eukaryotic, heterotrophs, cells lack cell walls.
-Invertabrates
-Vertebrates
-All animals have nervous and muscle tissue, but sponges.
-Reproduce sexually.
-Made up of 35 phyla
Fish, amphians, reptiles, birds, mammals.

-Origin is colonial, flagellated protest
-2 models used to distinguish possible phylogenetic orgins.
-Body plan grades
-Sequencing of rRNA= ribosomal RNA

Category, percentage, description, ex.
invertebrate, 95%, without backbone, worms.
vertebrate, 5%, with backbone, mammals.

Animal functions:
Feeding, respiration, circulation- blood contains urine, excretion- kidney and bladder,
movement- skeletal system, reproduction, responce.

Urea- waste product
Parasite and host- one benefits, and the other loses (sybiotic).

Types of feeders
-herbivore- feed on plants
-omnivore- meat and plants
-carnivore- feed on animals (meat)
-filter feeder- strains tiny floating animals and plants
-detritivores- eat decaying plants and animals

~cephalization- you have a head distinctly seperate from body.
~coelom- cavity
~platyhelmines- flatworm

~dicotomys key
~nemotoda- roundworms
~blastula- hollow ball of cells

~parazoa (means beside the animals)
~No true tissue but not colonial