Guess that Animal

Freshwater Fish

Vertebrate

Scales (dermal, don’t shed)

Endoskeleton

Cardiac muscle

Hyperosmotic regulator

Kidneys

Endotherm

Closed circulatory system

Two-chambered heart

Gills

Food mass diet

Digestive tract

CNS and PNS

Saltwater fish

Vertebrate

Scales (dermal, don’t shed)

Endoskeleton

Cardiac muscle

Hypoosmotic regulator

Kidneys

Endotherm

Closed circulatory system

Two-chambered heart

Gills

Food mass diet

Digestive tract

CNS and PNS

Reptiles

Vertebrate

Scales (epidermal, shed)

Endoskeleton

Cardiac muscle

Gets water from food, excrete salt in urine

Kidneys

Ectotherms or Endotherms (some of each)

Closed circulatory system

Three-chambered heart

Lungs

Food mass diet

Digestive tract

CNS and PNS

Insects

Invertebrate (no cartilage or cardiac muscle)

Ectoskeleton

Most get water from food, excrete salt in urine

Kidneys (semisolid urine)

Endotherm

Open circulatory system

Tracheal system

Food mass diet

Digestive tract

CNS and PNS

Mammals

Vertebrate (cartilage and cardiac muscle)

Endoskeleton

Get water from food, excrete salt in urine

Kidneys (urine to bladder; many copies of excretory organ)

Endotherm

Closed circulatory system

Four-chambered heart

Lungs

Food mass diet

Digestive tract

CNS and PNS

Crustaceans

Invertebrate (no cartilage or cardiac muscle)

Ectoskeleton

Osmotic conformers or regulators

Kidneys (urine to bladder)

Ectotherm

Open circulatory system

Gills

Food mass diet

Digestive tract

CNS and PNS

Molluscs

Invertebrate (no cartilage or cardiac muscle)

Ectoskeleton

Kidneys

Ectotherm

Open circulatory system (mostly)

Ciliated gills and mucous sheets

Suspension feeding (Filter)

Digestive tract

CNS and PNS

Sponges

Invertebrate (no cartilage or cardiac muscle)

Ectoskeleton/Endoskeleton

Ectotherm

Suspension feeder

Intracellular digestion (No specialised organs)

Cnidarians

Invertebrate (no cartilage or cardiac muscle)

Hydrostatic skeleton

Ectotherm

Extracellular and intracellular digestion

Nerve net

Flatworms

Invertebrate (no cartilage or cardiac muscle)

Hydrostatic skeleton

Nephridium (excretion through pore)

Ectotherm

No circulatory system

Respiratory diffusion

Food mass, deposit or suspension feeder

Extracellular and intracellular digestion

CNS and PNS

Nematodes

Invertebrate (no cartilage or cardiac muscle)

Hydrostatic skeleton

Ectotherm

Nephridium (excretion through pore)

Respiratory diffusion

liquid feeders / omnivores

Extracellular and intracellular digestion

CNS and PNS

Amphibians

Vertebrate

Endoskeleton

Kidneys

Ectotherm

Hyperosmotic regulators / terrestrial water balance

Closed circulatory system

Three chambered heart

gills/lungs some cutaneous respiration

Food mass diet

Digestive tract

CNS and PNS

Polychaetes (worms)

Invertebrates

Hydrostatic skeleton

Nephridia

Ectotherm

Respiratory diffusion

Closed circulatory system

Filter feeding / food mass

Digestive tract

CNS and PNS

Earthworms

Invertebrate

Hydrostatic skeleton

Ectotherm

Dorsal vessel for heart

Respiratory diffusion

Closed circulatory system

Nephridia

Digestive tract

CNS and PNS

Echinoderms

Invertebrate

Endoskeleton (ossicles)

Ectotherm

Food mass diet

Digestive tract

Respiratory diffusion

Open circulatory system

Nerve net

Birds

Vertebrate

Endoskeleton

4-chambered heart

Gets water from food, excrete salt in urine

Kidneys

Endotherms

Closed circulatory system

Lungs

Food mass diet

Digestive tract (includes crop)

CNS and PNS