ANIMALS
Vertebrates
Amphibian
Lay eggs in water and spend part of their life cycle there
As adults, live on land and breathe through lungs
Most have moist skin, as part of their respiration occurs through skin
Reptile
Fully terrestrial
Reproduce by internal fertilization
Dry scaly skin to retain moisture
Birds
Only vertebrates with feathers
Used for flights and conservation of body heat
Lay eggs
Mammals
They are studied in groups
They have haird in the body surface
Females possess mamas, but no all the mammals
The mammals are descended from reptiles
Fishes
Lay eggs
live underwater, so have gills to lungs
have scales and fins
Are cold blooded
Invertebrates
Protozoa
Size 2-100 micrometers
Reproduce
Sexually
Asexually
Most live individually
Most are heterotrophic
Echinoderms
Spiny skin
Five part radial symmetry
Tube feet: movement
Benthic organism
Annelids
Division of segment
Skin muscle sack is developed
True gastrovascular cavity with walls
Mollusks
Soft and unsegmented bodies
Often protected by hard outer shells
Foot used by crawling, digging and catching prey
Arthropods
They have jointed parts and legs
They have an exoskeleton
Crustaceans
They have gills for respiration
Head and thorax fuxed into a single unit called cephalothorax
Arachnids
They have eight legs
Wingles
Some produce toxins
Some are so small must be seenunder a microscop
Insects
have six legs
Many have wings
They have tree main body parts
Thorax
Abdomen
Head