• The largest animal phylum- 1 million species of crabs, shrimp, spiders, scorpions and insects make up this phylum
  • Have jointed appendages; segmented bodies
  • Exoskeletons made of chitin
  • Molt;  have heads with many sensory organs.
  • Bilateral
  • Simple and complex eyes that detect only light intensity and form images
  • Antennae that smell chemical substances in the environment
  • Sexual Reproduction- where sperm is released inside the female’s body, not in water.
  • Larvae of many species develop into very different adults, a process called metamorphosis.
  • Can develop resistance to insecticides- demonstrates how quickly they adapt to a changing environment.
  • Short generations and many offspring increase the chance that random mutations will produce a few resistant individuals
  • Ar thropods are segmented animals with jointed appendages and an exoskeleton

Can We Help with Your Assignment?

Let us do your homework! Professional writers in all subject areas are available and will meet your assignment deadline. Free proofreading and copy-editing included.

Chelicerates

  • Include horseshoe crabs and arachnids, such as spiders, scorpions, mites, and ticks

Millipedes and Centipedes

  • Are identified by the number of jointed legs per body segment
  • Crustaceans

–      Are nearly all aquatic

–      Include crabs, shrimps, and barnacles

  • Insects are the most diverse group of arthropods
  • Insects have a 3 -par t body consisting of
  • Head, thorax, and abdomen
  • Three sets of legs
  • Wings (most, but not all insects)
  • Many insects undergo incomplete or complete metamorphosis

A. Order Orthoptera

  • Grasshoppers, crickets, katydids, and locusts
  • B. Order Odonata
  • Dragonflies and damselflies

C. Order Hemiptera

  • Bedbugs, plant bugs, stinkbugs, and water striders
  • D. Order Coleoptera
  • Beetles

E. Order Lepidoptera

  • Moths and butter flies
  • F. Order Diptera
  • Flies, fruit flies, houseflies, gnats, mosquitoes

G. Order Hymenoptera

  • Ants, bees, and wasps

Phylum Echinodermata

  • Sea stars and sea urchins.
  • Reproduce sexually.
  • Sperm and eggs are released in water, where they join and fertilize
  • Movement by seawater into and out of a system of internal tubes.
  • The water vascular system – has suction cup–like tube feet used for respiration and locomotion

Phylum Chordata

  • Vertebrates-fish, amphibians, reptiles, birds, and mammals.
  • Full development of organ systems
  • Mostly sexual reproduction
  • 4 defining characteristics:
    • Stiff dorsal rod helps to organize the embryo’s development.
    • The central nervous system (brain and spinal cord) is tubular
    • Their sides have slits just behind the head.  These pharyngeal slits (pharynx means “throat”) becomes gill slits of adult fish.  In air-breathing chordates, they develop into various organs such as internal parts of the ears
    • They have a tail; in humans it’s the tailbone, or coccyx, which curls internally.
    • Lampreys are ver tebrates that lack hinged jaws and paired fins

CLASS: Fish

  • Jawed ver tebrates with gills and paired fins include sharks, ray-finned fishes, and lobe-fins
    • Chondrichthyans
    • Have a flexible skeleton made of car tilage
    • Include sharks and rays
    • Ray-finned Fishes
    • A skeleton reinforced with a hard matrix of calcium phosphate
    • Operculi that move water over the gills
    • A buoyant swim bladder
    • Lobe-fins
    • Have muscular fins suppor ted by bones

CLASS: Amphibians

  • The first tetrapods—ver tebrates with 2 pairs of limbs allowing movement on land
  • Include frogs, toads,  and salamanders
  • Most amphibian embryos and larvae must develop in water

CLASS: Reptiles

  • Amniotes — tetrapods with a terrestrially adapted egg
  • Terrestrial adaptations include
  • Waterproof scales
  • A shelled, amniotic egg
  • Ectothermic

–      Dinosaurs were the most diverse reptiles to inhabit land

  • Largest animals ever to inhabit land
  • May have been endothermic, producing their own body heat

CLASS:  Birds

  • Considered feathered reptiles with adaptations for flight
  • Birds thought to have evolved from  small, two-legged dinosaurs called theropods

–      Birds are reptiles that have

  • Wings, feathers, endothermic metabolism, and many other adaptations related to flight such as light bones

CLASS: Mammals

  • Amniotes that have hair, produce milk, and are endothermic
    • Hair, which insulates their bodies
    • Mammary glands, which produce milk
    • Monotremes lay eggs
      • The embryos of marsupials and eutherians are nur tured by the placenta within the uterus
      • Marsupial offspring complete development attached to the mother, usually inside a pouch
      • Eutherians- placental mammal complete development before bir th
      • The End of Animalia Notes!
      • Kingdom Books due 4/30!

guest
0 Comments
Inline Feedbacks
View all comments