Kingdom Animalia Unit 2 - Biodiversity

K. Animalia Characteristics Multicellular Heterotrophic Eukaryotic Lack cell walls

Animal Organization K. Animalia is divided into 9 phyla based on: Level of organization (cellular, tissue, organ system etc.) Body symmetry (asymmetry, radial, & bilateral) Cephalization (concentration of sensory tissue at the head) Body cavity formation Coelomate, pseudocoelomate, acoelomate

2 main groups Invertebrates Vertebrates No spinal column Spinal column

Vertebrates Animals with a spinal cord and an endoskeleton.

Fish Aquatic, have fins, scales and gills. Herbivores, carnivores, parasites and filter feeders. Sexual Reproduction– eggs fertilized internally or externally Bilateral body symmetry Ectothermic or cold blooded Found in water

Amphibians Their skin is usually smooth and lacks scales, hair, and feathers. Their skin must remain moist to aid in breathing. They lack claws on their toes. Herbivores as youth and carnivorous as adults. Sexual reproduction – eggs fertilized internally or externally Bilateral body symmetry Ectothermic or cold blooded In water as larva and on land as adults.

Reptiles Their skin has scales and is dry. They have claws on their toes, teeth and lay eggs on land. Herbivores and carnivores Sexual Reproduction – eggs fertilized internally. Bilateral Ectothermic or cold blooded Found in Temperate Climates

Birds Their skin is covered with feathers. They have four- chambered hearts. Their bones are lightweight and usually hollow. Their forelimbs are modified as wings. They lay eggs. Herbivores and carnivores Sexual reproduction – eggs fertilized internally. Bilateral Symmetry Endothermic or warm blooded Found everywhere.

Mammals They have hair, which varies greatly among species. Most have sweat glands. They have mammary (milk-secreting) glands to feed their young. Herbivores and carnivores Sexual Reproduction – fertilized internally. Bilateral body symmetry Endothermic or warm blooded Found almost everywhere

Invertebrates No spinal column Some with exoskeletons

Porifera (poh-RIF-ur-uh) Sedentary. Body is made of cells and tissues surround by a water filled space but there is no true body cavity. filter feeders Sexual & asexual (budding) Asymmetrical body symmetry Ectothermic or cold blooded Live in aquatic environments, mostly marine.

Cnidaria (ny-Dayr-ee-uh) Are all radial in symmetry, have stinging tentacles to catch prey. carnivorous and filter feeders Sexual & asexual (budding) reproduction Radial Symmetry Ectothermic or cold blooded Marine and fresh water

Platyhelminthes (plat-ih-hel-min-theez) Most are free living and parasitic. carnivores and parasitic Sexual (hermaphrodites) & asexual (fission) reproduction Bilateral body symmetry Ectothermic or cold blooded Marine and fresh water

Nematoda (nee-muh-ToHD-uh) Most are free living and parasitic. herbivores, carnivores and parasitic Sexual and hermaphroditic reproduction Bilateral body symmetry Ectothermic or cold blooded Live just about everywhere.

Mollusca (mol-us-ka) Soft body and sometimes a hard shell Bodies are divided into 3 parts: Head, Foot, and Visceral Hump. filter feeders, herbivores and carnivores Bilateral symmetry Ectothermic or cold blooded Marine, fresh water and land

Arthropoda (arth-rop-a-da) A hard outer body covering called an exoskeleton. Specialized mouth parts. Jointed legs. Compound Eyes. Segmented body herbivores, carnivores, ominovores Sexual (internally and externally) reproduction Bilateral body symmetry Ectothermic or Cold blooded Found in aquatic and terrestrial environments

Annelida (uh-Nel-ih-duh) Soft body worms with sections, possesses a through gut, mouth and anus. Some parasitic Sexual and hermaphroditic reproduction Bilateral body symmetry Ectothermic or coldblooded Found in soil and fresh water

Echinodermata (ee-Ky-noh-durmata) Have bodies with rough skin and sharp spines, possess 5- rayed symmetry. Calcareous skeleton Sexual (separate sexes) and asexual (regeneration) reproduction Radial body symmetry Ectothermic or Cold blooded Found in marine environments