animal kingdom

Circulatory system Digestive system Excretory system Habitat Movement type Mode of existence Respiratory Skeleton Skin/skin structures
Annelida
Segmented worms Closed circulatory system The digestive system is partitioned into different regions each with a specific function. It has the pharynx, the gizzard and crop, the oesophagus, and intestines Nephridia Marine environment Peristalsis or flexing using parapodia Sexual and asexual Have no true respiratory organs
No lungs
Breath through diffusion Over 100 segments with each segment having setae Each segment has the same set of organs separated by septae.
Mollusca
Bivalves, clam group Open circulation Filter feeders using gills Pair of nephridia Coastal and riparian human population Use the Foot External fertilisation Lack respiratory pigment
Use gills Covered by shell Shell made of calcium carbonate
Gastropods, snail group Open circulation Radula that is adapted to the food that it eats Nephridium Gardens
Deserts
Mountains
Woodlands
Lake
ditches Foot
Cilia Use courtship and love darts
Separate sexes while some are hermaphrodites Use gills Muscular attachment extending from their heads External shell
Cephalopods, squid groups Closed circulation Two-part beak nephridium Water bodies, salty waters Jet propulsion
Sexual Gills Muscular appendages from the head True external shell
Arthropoda
Insects Open circulation Alimentary canal – foregut, midgut and hindgut Malphigian tubules All Environments Walking
Swimming
Flying Almost all lay eggs
Three stage metamorphosis No lungs, have spiracles Chitinous exoskeleton,
Head thorax and abdomen Chitinous exoskeleton,
Crustaceans Closed circulation Digestive tract with gut, midgut and anus Maxillary gland
Antennal gland Aquatic
Terrestrial Some sessile
Some possess biramous limbs Separate sexes
Sexual Aerial respiration using gills Exoskeleton
Bilaterally symmetry
Four appendages Exoskeleton
Spiders Open circulatory system Internal and external digestion Coxal glands All environment Claws
Wings Sexual Lungs
Tracheae Two segments, no wings, eyes Flexible exoskeleton
Echinoderms
Starfish group Haemal system Opportunistic feeder
Parasites
Suspension feeding No distinct excretory organ
Diffusion through tube feet and papulae Marine Tube feet Sexual
Asexual Water vascular system for gaseous exchange Endoskeleton made of ossicles Covered by overlapping plates
Chordates, Vertebrata
Agnatha Jawfish Heart with two chambers No identifiable stomach Kidney Everywhere swim External fertilization 7 or more gills Cartilaginous skeleton Cartilaginous skeleton
Chondrichthyes Sharks Two chambered heart Special valves spiracle Oceans and some freshwater Swim Internal fertilisation 5-7 gills cartilaginous scales
Osteichthyes:
Actinopterygii, spiny ray finfish One circuit from heart to gills Predators Kidney
Skin
Gills
Take out ammonia Freshwater
Marine water
Mountain streams Swim Separate sexes
Both internal and external fertilisation Gills Internal skeleton (pelvic and pectoral girdles) Web of skins
Osteichthyes: Sarcopterygii, lobe-fin fish Two chambered heart predators kidney Marine
Freshwater swim Eggs Gills Paired fin joined by a single bone Fused body
Amphibia Two chambered heart Oesophagus
Gallbladder kidney Freshwater
Terrestrial
Legs
Climbing
walking Sexual Lungs Four limbs Chitinous cuticle
Aves, birds Four-chambered heart Nectar fruits Nitrogenous Wastes everywhere Fly with wings sexual Lungs Lightweight feathers feathers