How Many invertebrates do you know?	Poriferans / Cnidarians / Annelids / Molluscs / Arthropods / Echinoderms
How do poriferans reproduce	Asexually (fragmentation or gemmation) Also sexually(sperm released on fertilised ova) - larvae be born and can swim - larvae is attached to a surface and become sessile adults)
Describe the nutrition of poriferans	They are FILTER-FEEDERS: flagella movement by choanocytes creates a flow of water in the sponge body: - food particles keep - waste products expeled through osculum (mouth)	Hacen las dos reproducciones
How is the interaction in poriferans?	Don't have nervous system Don't have sense organs
Parts of poriferans:	Osculum (mouth) Pores (water enter by pores) Flagellated cells (choanocytes) create water movement Atrium (cavity) Spicule
Describe the cnidarians	Radial symmetry Mouth with tentacles Gastrovascular cavity (his skeleton) Tentacles with stinging cells (CNIDOCYTES): toxic!!!, used for defense
What do you know about cnidarians NUTRITION?	Carnivores: Tentacles used to catch the prey that has to be digested in the cavity; Waste expelled through the mouth
How cnidarians reproduce?	Asexually, by gemmation
Describe the interaction fiction in cnidarians	They have simple sense organs. They react to light and vibration
Parts of cnidarians	Tentacles Mouth Gastrovascular cavity Umbrella (medusae)
Classification of cnidarians	HIDROZOANS SCYPHOZOANS (medusae) ANTHOZOANS (polyps, like anémonas and corals)
Describe the characteristics of annelids	Body divided into segments (METAMERES). Movement using bristles -pelos o púas- (CHETAE). Bilateral symmetry
Describe the poriferans	Sponges are the most primitives Cells don't form tissues They are sessile (don't move)
How is the nutrition function in annelids?	They can be PREDATORS / FILTER-FEEDERS / SAPOTROPHS / PARASITES. They breath with GILLS (aquatic) or trough SKIN (terrestrials)
Describe the reproduction of annelids	Sexual ( can be hermaphrodites or can have both sexes)
How annelids interact with environment ?	They have nervous system and sense organs to detect: Light, vibration and taste
Which are the most important parts of annelids?	Mouth Clitellum ( for reproduction) Metameres (segments forming the body) Annus
Describe the mollucs	Bilateral symmetry Soft body: - head - foot to move - visceral mass ( surrounded by a membrane -MANTLE- that form the shell)
Classification of annelids	POLYCHAETES (marine) OLIGOCHAETES (earthworm) HIRUDINEANS (leeches: sanguijuelas)
How molluscs perform nutrition?	They have a complete digestive system Tongue with radula (teeth) Can be: HERVIBORES (snail) CARNIVORES (squid) FILTER-FEEDERS (oyster) PARASITES (sea snails) They breath with guills (aquatic) or lungs (terrestrial)
Reproduction of molluscs	Sexual ( can be hermaphrodites or can have different sexes) They are OVIPAROUS
How molluscs interact?	They have sense organs ( olfact, sight, taste, touch) Movement by foot
Tell me the most important parts of molluscs	Eyes Tactile tentacles Mouth with radula Lungs/ Guills and stomach Muscular foot Shell ( snails, valves in muscles, internal cuttlebone in squid)
How many types of molluscs do you know?	GASTROPODS (slug, snail, limpet) BIVALVES ( filter-feeders, like oysters and muscles) CEPHALOPODS (carnivore, like squid and octopus)
Describe the ARTHROPODS (jointed limbs)	Bilateral Symmetry Body divided in segments: HEAD (brain, eyes, mouth); THORAX (heart, legs); ABDOMEN (excretory and respiratory system). Body covered by a HARD EXOSKELETON.
How is the NUTRITION in ARTHROPODS?	Can be: - HERVIBORES - CARNIVORES - OMNIVORES - PARASITES (Fleas -pulgas-, lice - piojos- ) - SCAVENGERS (carroñeros: housefly) - They BREATH by Guills ( aquatic) or TRACHEAE (terrestrial)
Describe the REPRODUCTION in ARTHROPODS	SEXUAL ( separate sexes): fertilization inside female body They are OVIPAROUS They Change EXOSKELETON ( moult process) Some do METAMORPHOSIS
How ARTHROPODS interact with the environment?	They have a developed nervous system: - OCELLI - COMPOUND eyes - sensitive HAIR ( detect vibration, taste, touch)
Parts of the ARTHROPODS	Antennae, Head, Thorax, Articulated legs ( jointed legs), Abdomen
Types of ARTHROPODS	ARACHNIDS CRUSTACEANS MYRIAPODS INSECTS
How are ARACHNIDS?	Spiders, Scorpions, Ticks (garrapatas). They have: - CEPHALOTORAX (OCELLI -8eyes-; 2 PEDIPALP -sensors-; CHELICERA -mouth-) - ABDOMEN: can secrete SILK ( seda)
How are CRUSTACEANS	Crabs , Lobsters (langostas), Prawns (gambas). They have: - 2 pincer-like CLAWS (mandibulas) - CAPARACE (exoskeleton)
How are MYRIAPODS?	Centipedes (ciempies), Millipedes (milpies). They have: - HEAD (2 antennae + venom claws -mandib. veneno) - TRUNK (elongated and divided in about 15-200 segments). Each segment has 1-2 pairs of legs
How are INSECTS?	They have wings to FLY Body divided in HEAD+THORAX+ABDOMEN Development through METAMORPHOSIS Types: COLEOPTERANS (beetles) DIPTERANS (flies, mosquitoes) LEPIDOPTERANS (butterflies) HYMENOPTERANS (ants, bees, wasp)
Describe the ECHINODERMS	Marine animals Radial symmetry Body divided in 5 parts Internal skeleton ( ENDOSKELETON) Have an AMBULACRAL system: tubes for water circulation that performs RESPIRATION/FEEDING/SENSORY-RECEPTION
How is Nutrition in ECHINODERMS?	They have a complete digestive system. Can be: - CARNIVORES (starfish) - HERVIBORES (sea urchin: erizo de mar) - FILTER-FEEDERS - SCAVENGERS ( carroñeros) Respiration through AMBULACRAL SYSTEM
How is Reproduction in ECHINODERMS?	Sexually ( separate sexes) or Asexual ( Regenerative Lost parts in Starfish)
How is the interaction in ECHINODERMS?	They move with a TUBE FEET
Classification of ECHINODERMS	ASTEROIDS ( starfish) ECHINOIDS (sea urchin -erizo de mar-) HOLOTURIANS CRINOIDS

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