Kingdom animalia
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Kingdom Animalia. General Characteristics and Invertebrates. What is an animal. Multi-cellular, eukaryotes, heterotrophic organisms whose cells do not have cell walls Animals can have no symmetry, radial symmetry or bilateral symmetry

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Kingdom animalia

Kingdom Animalia

General Characteristics



What is an animal
What is an animal

  • Multi-cellular, eukaryotes, heterotrophic organisms whose cells do not have cell walls

  • Animals can have no symmetry, radial symmetry or bilateral symmetry

  • Animals must be able to take care of the following to survive

    • Feeding, respiration, circulation, excretion, response, movement, reproduction

Phylum porifera
Phylum Porifera

  • Example: sponge, all species have no symmetry

  • Feeding: Sponges are ocean organisms and are attached to the ocean floor. They are filter feeders, meaning they filter food out of the water that flows through their bodies

  • Respiration, Circulation, Excretion: All done by the flow of water through the body

  • Response: Have no nervous system but can protect selves with poisons

Phylum porifera cont
Phylum Porifera, Cont.

  • Reproduction

    • Asexual– budding or gemmules

    • Sexual– are hermaphrodites and internal fertilization occurs, sperm from one sponge swims through the water to fertilize the eggs of another

  • Movement– sponges are sessile organisms

Phylum cnidaria
Phylum Cnidaria

  • Jellyfish, coral, hydra

  • Feeding: carnivores, hunters that paralyze prey with poison in nematocysts also called cnidocytes (stinging cells) located on tentacles. Once paralyzed, prey is pulled into the stomach (gastrovascular cavity)

  • Respiration, Circulation and Excretion: done by the flow of water through the body

  • Movement: Hydrostatic skeleton (muscles) or jet propulsion

Phylum cnidaria cont
Phylum Cnidaria, Cont

  • Response: Complicated nerve net along body, concentrated around mouth

  • Reproduction: Sexual only, two forms of life (polyp and medusa), external fertilization

  • Groups (Classes)– sea anemones and corals, jellyfish, hydras


Box Jellyfish

Most poisonous creature in the sea

Brain Coral

Portuguese Man o War

Phylum platyhelminthes
Phylum Platyhelminthes

  • Flatworms: Planarian, Tapeworm

  • Feeding: Can be parasites, free- living carnivores or scavengers

    • Two way, one opening digestive tract (pharynx, mouth and anus all the same place)

  • Respiration, Circulation and excretion: Diffusion since the body is flat, flame cells help to remove liquid waste from the body

Phylum platyhelminthes cont
Phylum Platyhelminthes, cont

  • Response: Simple brain called ganglia (collection of nerve cells in anterior end), nerve cords along body, eyespot to detect light

  • Reproduction:

    • Sexual- hermaphrodites

    • Asexual- fission or regeneration

  • Movement- Free living move with muscles or cilia, parasitic worms do not usually move




Blood Fluke

Phylum nematoda
Phylum: Nematoda

  • Roundworms: hookworm, ascaris

  • Movement: Most roundworms are parasitic, so they don’t move on their own. Some have muscle systems to push themselves along

  • Feeding: Parasitic (mostly) so they spend their lives feeding off of other organisms through diffusion

  • Respiration, Circulation, Excretion: Diffusion across body membranes

Phylum nematoda cont
Phylum: Nematoda Cont.

  • Response: Simple nervous system, ganglia in anterior end

  • Reproduction: Sexual reproduction, internal fertilization. Often, parasitic worms have complicated life cycles involving more than one host




Phylum annelida
Phylum Annelida

  • Segmented worms such as leeches and earthworms

  • Feeding and Digestion: Complicated system including crop, gizzard and pharynx. Used in food storage, crushing and digestion

  • Circulation: Closed circulatory system with vessels and five hearts (earthworm)

  • Respiration: Diffusion, some respire using gills (aquatic)

Phylum annelida cont
Phylum Annelida Cont.

  • Excretion: Solid waste through anus, liquid waste through nephridia (little kidneys)

  • Response: Well developed nervous system with a brain and nerve cord

  • Movement: Complicated muscular system, marine worms use paddles to swim

Phylum annelida cont1
Phylum Annelida, Cont.

  • Reproduction: Sexual, most have separate sexes, some hermaphrodites

  • Groups: Earthworms, leeches, marine worms

Segmented worms
Segmented Worms

Cute Earthworm

Bunch of Earthworms


Phylum mollusca
Phylum Mollusca

  • Soft bodied animals with four basic body parts, foot, mantle, shell and visceral mass

  • Feeding: Variety of feeding methods, carnivore, herbivore, scavenger, parasites

  • Respiration: gills or diffusion

  • Circulatory: Open system, blood pools in cavities called sinuses

Phylum mollusca cont
Phylum Mollusca Cont.

  • Excretion: Nephridia release liquid waste

  • Response: Nervous systems vary depending on type of mollusk

  • Movement: Varies depending on type, but foot is used for locomotion. Some mollusks have a foot divided into tentacles

Phylum mollusca cont1
Phylum Mollusca Cont.

  • Reproduction: Variety of reproductive processes. Mostly external fertilization, some have internal

  • Groups of Mollusks

    • Class: Gastropoda (stomach foot) snails and slugs

    • Class: Cephlapoda (head foot) octopuses and squid

    • Class: Bivalves (two shells) clams and oysters, scallops



Electric Flame Scallop

English Garden Snail

Phylum arthropoda
Phylum Arthropoda

  • Means: Jointed foot or leg, examples, lobster, crab, insect, spider. Have exoskeleton made of chitin

  • Growth: Must molt to grow

  • Feeding: Variety of methods, carnivore, omnivore, parasite, herbivore

  • Respiration: Tracheal tubes, spiracles, book lungs, book gills

Phylum arthropoda cont
Phylum Arthropoda, Cont.

  • Circulation: Well developed heart, arteries and other vessels, open system (includes sinuses and other cavities)

  • Excretion: Malpighian Tubules, diffusion

  • Response: Brain, nerves, well—developed sense organs (eyes, taste receptors)

  • Movement: Muscles, wings, legs, swimmerets, variety of locomotion

Phylum arthropoda cont1
Phylum Arthropoda, Cont

  • Reproduction: Mostly internal fertilization, males have a sex organ or deposit a sperm packet into females

  • Groups:

    • Crustaceans (lobster, crab, shrimp)

    • Chelicerates (spiders, mites, scorpions)

    • Insects (most number of animal species, butterflies, bees, ants)

Class insecta
Class Insecta

  • Insects are the largest group of animals

  • Three part body (head, thorax, abdomen)

  • Three pairs of legs and other appendages

  • Complicated sense organs, movement and social structures

  • Some insects go through metamorphosis

    • Incomplete- grasshopper

    • Complete- Butterfly


Lobster… Anybody Hungry???

Black Widow Spider


Phylum echinodermata
Phylum Echinodermata

  • Means: Spiny Skin, examples sea star, sea cucumber, sea urchins

  • Water vascular system: complicated system using water to take care of many body processes

    • Contains hundreds of tube feet which use suction methods powered by water flow

Phylum echinodermata cont
Phylum Echinodermata, Cont.

  • Feeding: herbivores. carnivores, scavengers, filter feeders

  • Respiration and Circulation: water vascular system

  • Excretion: Solid waste released out of the anus, liquid waste through walls of tube feet by diffusion

  • Response: Radial nerve ring, scattered sensory cells

Phylum echinodermata cont1
Phylum Echinodermata, Cont.

  • Movement: tube feet, thin muscles, soft joints

  • Reproduction: External fertilization, bi-lateral larvae, radial adult

  • Groups

    • Sea Urchins and Sand dollars

    • Brittle Stars

    • Sea Cucumbers

    • Sea Stars

    • Sea lilies and feather stars


Red-Lined Sea Cucumber

Sun Star

Sea Lily