practical 3

Phylum Poriphera (granita)

Body symmetry

Radial

Phylum Poriphera (granita)

Muscular

Amoeba cells, sessile, collar cells to circulate water, free swimming larvae

Phylum Poriphera (granita)

Protective

Spicules, amoeba cells, immune system

Phylum Poriphera (granita)

Circulatory

Collar cells, pores, osculum

Phylum Poriphera (granita)

Respiratory

Simple diffusion from water column

Phylum Poriphera (granita)

Nervous

Specialized sensory cells

Phylum Poriphera (granita)

Reproduction

Asexual: budding and fragmentation

Sexual: hermaphroditism, producing eggs and sperm, free swimming larva

Phylum Poriphera (granita)

Digestive

Collar cells, pores, osculum, digestive cavity,

Phylum Nematoda (Ascaris Roundworm)

Body symmetry

Bilateral

Phylum Nematoda (Ascaris Roundworm)

Muscular

Hydrostatic (skeleton) to move

Phylum Nematoda (Ascaris Roundworm)

Protective

Thin epidermis, white blood cell

Phylum Nematoda (Ascaris Roundworm)

Circulatory

Simple diffusion through skin and digestive tube

Phylum Nematoda (Ascaris Roundworm)

Respiratory

Cutaneous respiration

Phylum Nematoda (Ascaris Roundworm)

Nervous / sensory

Nerve net like (neurons)

Phylum Nematoda (Ascaris Roundworm)

Reproduction

Male:seminal vesicles and deferents

female: oviducts and uterus

Phylum Nematoda (Ascaris Roundworm)

Digestive

Pseudocoelom encasing an intestinal tube

Phylum Annelida (Earthworm)

Symmetry

Bilateral

Phylum Annelida (Earthworm)

Muscular

Circular muscular segments for contractions, mucus

Phylum Annelida (Earthworm)

Protective

Epidermis with mucus

Phylum Annelida (Earthworm)

Circulatory

Dorsal and ventral blood vessels, aortic arches

Phylum Annelida (Earthworm)

Respiratory

(cutaneous) mucus secreted facilitates gas exchange across the epidermis

Phylum Annelida (Earthworm)

Nervous / sensory

Ganglion (primitive brain); ventral nerve tube

Phylum Annelida (Earthworm)

Reproduction

Hemaphrodisiac seminal vesicles and seminal receptacles

Phylum Annelida (Earthworm)

Digestive

Mouth, pharynx, crop, gizzard, intestine, anus;coelom

Phylum Chordata

Symmetry

Bilateral

Phylum Chordata

Muscular

Biceps, brachii, Pectoralis major/minor, segmentation in thoracic muscles and lever system formed by muscles, tendons, bone crossing joints

Phylum Chordata

Protective

Thick epidermis, adipose, hair, internal skeleton; lymphatic system = WBCs, thymus; lymph nodes

Phylum Chordata

Circulatory

Heart; (four chambers)aorta, vena cava; arteries and veins; closed.

Phylum Chordata

Respiratory

Lungs; trachea; diaphragm (smooth muscle involuntary control)

Phylum Chordata

Nervous / sensory

Brain (cerebrum, cerebellum, midbrain, brain stem) nerves and plexuses(bundles of axon); eye; ears; sensory nerve endings; motor ending

Phylum Chordata

Reproductive

ovaries and fimbriae/uterine tube;

testes, penis, sperm

Phylum Chordata

Digestive

esophagus, stomach(cardiac sphincter), small intestine, large intestine, colon, rectum, anus, liver, pancreas, gallbladder, salivary glands, teeth, tongue, pharynx/larynx

Phylum Arthropoda

Symmetry

Bilateral

Phylum Arthropoda

Muscular

Muscles attached to exoskeleton; jointed limbs

Phylum Arthropoda

Protective

Exoskeleton of chitin,

Subphylum crustacean: claws

Phylum Arthropoda

Circulatory

Open circulation, hemolymph

Phylum Arthropoda

Respiratory

Crustacean: gills, air pores along abdomen

Phylum Arthropoda

Nervous / sensory

ganglia with neurons, antennae, eyes

Phylum Arthropoda

Reproduction

Sperm and eggs. Internal and external fertilization

Phylum Arthropoda

Digestive

Digestive tube, mandibles, and maxillae

Phylum Mollusca

Symmetry

Bilateral