Biololgy 1 - Invertebrates (Dahlia)

8/3/2019 Biololgy 1 - Invertebrates (Dahlia)

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INSECTS

http://sharon-taxonomy2009-p2.wikispaces.com/Arthropoda-Insecta

Unique Features:

Almost all insects have wings. No other group of arthropodscan fly.

Their tiny size, quick reproduction rate, and ability to flyenable insects to explore and exploit almost every

environmental niche imaginable.

They are the most diverse class of animals and the mostnumerous, by individual and by species.

They have tri-segmented bodies; head, thorax, andabdomen.

Their vital organs, as well as their sexual organs are foundin their abdomen

Examples:

Coccinella septempunctata (lady bug) Bathyraja mariposa (Mariposa butterfly)

Somatochlora metalicca (Brilliant Emerald dragonfly)

Ma. Himig Adviento

II Dahlia

UNIRAMIANS

http://userwww.sfsu.edu/~biol240/labs/lab_19arthropod/pages/myriapoda.html

Unique Features: They have single-branched appendages and one pair of

antennae, mandibles and maxillae

They are thought to have evolved on land about 400 millionyears ago.

They can be found on almost all terrestrial habitats onEarth, although some species live in fresh water

environments while others in marine environments.

Examples:

Battus philenor Acanthocephala terminalis Acronicta impressa Aeshna canadensis

Thea Coleen F. Sanico

II - Dahlia


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CHELICERATES

http://bio.classes.ucsc.edu/bio136/arthropoda/chelicerata/scorpiona.gif

Unique Features:

They lack antennae. The body is divided into two main divisions; the prosoma

and the opisthosoma.

They have two pairs of appendages near the mouth, thechelicerae (fang/claw-like appendages) and the pedipalps(varies based on the organism) which are found on the

prosoma.

They have compound eyes. They are originally marine animals; dated as far as 445

million years ago, the Ordovician period.

Examples:

(Horseshoe crabs) (Yellow mite) (Sea scorpions)

Ellora Trisha G. Narida

II - Dahlia

CRUSTACEANS

http://www.kentuckyawake.org/Crustaceans

Unique Features:

Crustaceans have an exoskeleton, 2 pairs of antenna, andmandibles.

Several large crustaceans exoskeletons contain calciumcarbonate, or limestone, which makes the exoskeletonhard

Crustaceans have 3 main body parts: head, thorax, andabdomen.

In some crustaceans, the head and the thorax fuse into acephalothorax, which is covered by a carapace.

Examples:

Macrocheira kaempferi (Japanese Spider Crab)

Camilla Francesca J. Ibay

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CENTIPEDES

http://www.marlin.ac.uk/

Unique Features:

Centipedes have a pair of legs for each body segment,differentiating them from millipedes. Their pairs ofl leg that

they have can range from 15 to 171.

They have a unique structure called forcipules, which is amodification of the first pair of legs forming a pincer-like

appendage found behind the head. They are used to

capture preys and injecting venom into these preys.

Centipedes do not use copulation for reproduction. Themale makes a web where he deposits his spermatophore.

The male centipede will then do a courtship dance to

encourage a female centipede to take his spermatophore.

In some cases, the male centipede just leaves his

spermatophore in the web.

Examples:

Feather tail centipede (Alipes grandidieri) House centipede (Scutigera coleoptrata) Giant Sonoran centipede (Scolopendra polymorpha)

Jamika Ann E. Roque

II - Dahlia

CENTIPEDES

http://www.enchantedlearning.com/subjects/invertebrates/arthropod/millipedelabel/answers.GIF

Unique Features:

Millipedes posess two pairs of legs per body segment.Their legs produce a wave-like motion.

Millipedes have brush-like clusters of hair on their secondor third pair of legs that they use to clean the antennae.

Millipedes dont have the ability to bite. Therefore, amillipede curls into a ball if it senses danger. They could

also release hydrogen cyanide gas or a poisonous liquid

when irritated.

Examples:

Pill millipede (Glomeris marginata) Cyanide millipede (Harpaphe haydeniana)

American Giant millipede (Narceus americanus)

Caireen G. Tuppil

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TRILOBITES

http://hu.wikipedia.org/wiki/Ellipsocephalus_hoffi

Unique Features:

They are extinct arthropod ancestors, which hadsegmented bodies, each part having jointed legs.

Trilobites, in order to grow, underwent a process calledmolting during their development. They would shed their

exoskeleton by splitting open their facial sutures, opening

the cephalon. This is how the trilobite moved out of its old

exoskeleton.

When in danger, trilobites could enrollwith the use ofinternal muscles, they would roll into a ball to protect

vulnerable structures.

Examples:

Paradoxides davidis Redlichia takooensis Mesonacis vermontanus Elrathia kingie

Mikaela T. Cadiz

ARTHROPODS

Picture taken from Biology book

Unique Features:

They have tough exoskeletons. The exoskeleton is made of Chitin. It molts exoskeletons to gwo. They have jointed appendages. Their bodies are segmented.

Examples:

Leiurus quinquestriatus (Deathstalker) Scorpion/Palestine Yellow Scorpion) Lactrodectus Hesperus (Western Black Widow Spider) Archispirostreptus gigas (African Giant Milipede)

Francis Martin Logmao

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NEMATODES

http://www.personal.psu.edu/ncj111/Unique%20Features.htm

Unique Features:

Nematodes muscle cells branch toward nerve cells. Includes a large amount of species. Only has simple but defined digestive track. Has less amount of cell multiplication because it grows

through cell enlargement.

Examples:

Enterobius vermicularis (The Human Pinworm) Ancylostoma duodenale (Human Hookworm) Ascaris lumbricoides (Large Roundworm of Man)

Patricia Yzabel D. RiveraII - Dahlia

MOLLUSKS

http://infusion.allconet.org/webquest/PhylumMollusca.html

Unique Features:

- All modern classes of this phylum has a broad, muscularfoot, though some might have been reduced, or some might

have been modified into arms.

- Most have a shell made mainly of chitin and conchoilin andhardened with calcium carbonate. Some are external, like

snails, while some are internalized, like in squids.

- Molluscs except for bivalves have radulae, which areminutely toothed, chitinous ribbons. They are commonly

compared to a tongue, though it is inaccurate.

Examples:

- Octopus vulgaris(common octopus)- Sepia officinalis(common cuttlefish)-

Helix pomatia (Roman snail)- Tridacna gigas (a giant clam)- Mytilus edulis (blue mussels)

Allen Cedrick B. Domingo

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RING WORMS

http://www.tutorvista.com/content/biology/biology-iii/animal-

kingdom/phylum-annelida.php

Unique Features:

Annelids such as leeches are very useful in medicine; andearthworms are important decomposers.

Annelids reproduce asexually (this happens throughfission, a process in which an annelid splits its body into 2,

and forms another annelid) and sexually (this happens

when a male annelid transfers fluid into a female ovipore;

then, the female annelid will release egg cocoons which

will be young worms).

Annelids have segments that help them in locomotion; theyalso have a citellum, a reproductive organ only found in

annelids, a closed circulatory system, but doesnt have

respiratory organs. They also have a perfectly bilateral

symmetrical body.

Examples:

Pompeii worm (Alvinella pompejana )

Polygordiidae (Polygordius appendiculatus ) Earthworm (Lumbricus terrestris )

Aaron John P. Navarro

II - Dahlia

Biololgy 1 - Invertebrates (Dahlia)

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