Competitive Exams: Revision Terminology Part 48

Porifera (Sponges)

  1. Calcispongaic – Caco3 – leucosolenia, Scypha.

  2. Hexactine llida – 6 rayed spicules – Eupletella, hyalonema.

  3. Demospogva – spongin / silica – Euspongia, Spongialla.

Coelentrata

  1. Hydrozoa – medusa + polyp sessile – radial sym. – hydra, physalia.

  2. Scyphozoa – medusa – tetramerous radial – Aurelia (jelly fish).

  3. Anthozoa – polyp – hexamerous rachial – Adamsia (Sea anemone)

    Astraea (star coral)

    Pennatula (sea pen)

    Gorgonia (sea Fan)

Platyhelminthes

  1. Turbellaria – lead like, eddy worker, free living, mouth - ventral, unsegmented, ciliated epidermis, epicuticule, planaria Dugesia.

  2. Trematoda – lead like, mouth – anterior, unsegmented, parasite, fluke – Fasciola (Liver – Fluke).

  3. Cestoda – ribbon – proglottids pseudometamer, endoparasite, covering, no spine – tapeworm asdelminthes – ascaris.

Annelida (tube within tube – body plan)

  1. Oligocheata – locomastive by setae, develop – direct, permanent plitellum, hermaphrodites – earthworm.

  2. Poly cheata – many setae, trochopore larva, clitellum ab, unisexual nereis.

  3. Hirudinea – locomotiaon by suckers, develop direct dittelum temporary, botryodial tissue, sangrivorous eg. Hirudinea (lecca)

Arthropoda

  1. Oxychophora – worm like, unjointed leg, Segmented, Resp – trachea, ex – nephntlier peripatus (walking worm).

  2. Crustacea – cephalothorax + abdomen, carapace, 2 pair antennae, ex by antennrary gland eg prawn, crab, water flea.

  3. Chilopoda – head + trunk – seq has unjointed legs, poison claws, resp – trachea, ex – malphigian tubule eg centipede.

  4. Diplopoda – head + thorax + abdomen – abdomen 2 pair of legs – millipede.

  5. Insecta – head + thorax + abdomen 3 pair of leg = hexapoda. Cock roach, silver fish.

  6. Arachnida – cephals thorax + abdomen – resp – trachea – Book lemg ex – coxal / melphigiam.

  7. Merostomata – cephalothoran + abdomen, king crab – limulus – 5 walking + 1 chelicerae ex by coxal gland resp bok gill.

Mollusca

  1. Monoplacophora – foot sole like, one shell plate – neoplina.

  2. Amphineura – foot sole like, 8 shell plate – chiton.

  3. Gastropoda – foot -> stomach, shell coiled – pila (Apple snail).

  4. Bivalvia / pelcy poda – foot – wedge shape, shell – 2 valve dorsally unio, pinctada, teredo, solen – Pearls.

  5. Scaphopoda – foot conical – shell – elephant tusk like – Dentalium.

  6. Cephalopoda – foot -> head (8 – 10 arms) – Sepia, loligo, O ctopus.

Echinodermata

  1. Asterodia – star, madreporite – aboral – Bipinnaria larva – star fish.

  2. Ophinodia – globular – number arm, madreporite – oral, pluctue larva – Brittle star.

  3. Echinodia – globular – number arm, madreporite – aboral, moverable spine, aristotte’s contern – echino – Plautus larva eg sea urchin.

  4. Holotheroidea – cucumber like, madreporite – oral – auricularia larva – sequence cucumber

  5. Crinoidea – flower like, pinmules, madreporite – ab, dolaria larva – Anteder.