CLASSIFICATION- ANIMALSBiologyMiss Schwippert

ANNELIDS (WORMS)

ANNELIDS ( WORMS) Transport: Moves using muscular contractions and

grips with bristles called setaeClosed circulatory system.

Excretion: liquid waste is removed using the nephridia

Respiration: oxygen is diffused across its skin (so it must stay moist)

Nutrition: Heterotrophic decomposers; have a digestive system with mouth and anus

Sexual reproduction (most are hermaphrodites). After exchange of sperm, cocoon of eggs is laid in the soil.

Growth and Development: Hatch fully developed except for sex organs. Segments are added to the head end as they grow.

II. ARTHROPODS

Most diverse and widely successful (1.3 million species) of any phyla. Exist in every environment. Their name means, “jointed appendage.”

ARTHROPODS Transport: closed circulatory system. Can walk,

swim or fly. Excretion: most use malpighian tubules Respiration: Oxygen is absorbed through openings

called spiracles which lead to trachea. The trachea pass oxygen to tissues. If aquatic, use gills

Nutrition: Heterotrophic with a closed digestive system with saliva, enzymes, mouth and anus

Reproduction: Sexual reproduction Growth and Development: Eggs hatch into

larvae/pupae then becoming adults (metamorphosis). Growth is accomplished through life by molting the exoskeleton.

III. FISH: GROUP OF CHORDATES THAT CONTAINS BOTH FRESH AND MARINE SPECIES (26,000 OR MORE). ALL HAVE A SPINAL CORD, GILLS, AND INTERNAL SKELETON OF BONE OR CARTILAGE.

FISH Transport: Cold blooded with a closed circulatory

system. Oxygen is absorbed through gills. Excretion: waste excreted via urine (ammonia)

and fecal matter. Salt water fish conserve water as much as possible.

Respiration: Gills of a fish contain many blood vessels that absorb oxygen from the water. Lots of surface area.

Nutrition: Heterotrophic Reproduction: Sexual: most lay eggs BUT some

do give live birth. Growth and Development: Born as immature

alevin. Grow slowly throughout life.

IV. AMPHIBIANS

AMPHIBIANS Transport: Closed digestive system with mouth,

stomach, intestines, and cloaca; Closed circulatory system with a chambered heart to transport blood, oxygen and carbon dioxide.

Excretion: kidneys and bladder to filter blood; waste leaves through cloaca.

Respiration: Gas exchange via skin and as adults they also use lungs. This is one reason why they must stay moist.

Nutrition: heterotrophic Reproduction: Sexual. Most lay eggs in or near

water. Growth and Development: hatch from eggs as

larvae and then undergo metamorphosis until adult stage.

http://www.mhhe.com/biosci/genbio/virtual_labs/BL_16/BL_16.htmlhttp://www.biologycorner.com/worksheets/frog_alternative.html

IV. MAMMALSChordates with hair, milk produced by female

and endothermic ability using sweat glands and fatty layer.

Mammals also have highly developed brains.

ANIMALS Transport: 4 chambered heart with extensive

network of veins, arteries, and capillaries (due to our relatively large size).

ANIMALS Excretion: Kidneys filter blood and remove waste;

urine and fecal matter is excreted via urethra/anus. Respiration: Gas is exchanged in the lungs using

diffusion and pressure. Lungs are fed by capillaries which carry blood to/from the heart.

Nutrition: Heterotrophic; young drink milk from mammary glands in the female.

Reproduction: Mammals reproduce using internal fertilization with

eggs and sperm, but there are 3 groups of mammals:I. Monotremes: lay eggsII. Marsupials: live birth with pouched careIII. Placental: internal development with nutrients

exchanged with a placenta

https://www.youtube.com/watch?v=2lCKc8tURtc