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Porifera By Gianna & Anna
Porifera
▪ “Porifera”- a phylum of invertebrate animals comprising the sponges
▪ Live in all regions – Marine water▪ Amebocyte- immobile cell in intverbrates
▪Asymmetrical
▪ Fixed in one place – immobile (sessile)https://www.google.com/search?q=sponges+nervous+system&biw=994&bih=461&source=lnms&tbm=isch&sa=X&sqi=2&ved=0CAYQ_AUoAWoVChMIzI27pfOjyAIVAlA-Ch2Izwud&safe=active&ssui=on#safe=active&tbm=isch&q=porifera
https://en.wikipedia.org/wiki/Sponge
Nervous System
▪Absent▪No nerve or sensory cells
https://www.google.com/search?q=sponges+nervous+system&biw=994&bih=461&source=lnms&tbm=isch&sa=X&sqi=2&ved=0CAYQ_AUoAWoVChMIzI27pfOjyAIVAlA-Ch2Izwud&safe=active&ssui=on#safe=active&tbm=isch&q=porifera
https://en.wikipedia.org/wiki/Sponge
Digestive System▪Filter Feed
▪Collar cell▪Serves two purposes▪Moves flagella back and forth to force in water
▪Breaks food into particleshttp://www.oceanicresearch.org/education/wonders/sponges.html
Excretory, Circulatory Respiratory
▪Diffusion/Osmosis
https://www.google.com/search?q=sponges&es_sm=93&source=lnms&tbm=isch&sa=X&ved=0CAcQ_AUoAWoVChMI__zK2P-jyAIVhXA-Ch0y1wM7&biw=994&bih=461&safe=active&ssui=on#imgrc=psX532DHTCVy-M%3A
Support or Skeletal?▪Absent
▪Provide structural support and deter predators
▪Spicules- structural elements providing support
▪Made up of Calcium Carbonate https://www.google.com/search?q=glass+sponges&es_sm=93&source=lnms&tbm=isch&sa=X&ved=0CAgQ_AUoAmoVChMI_P-XuP6jyAIVjDk-Ch31xgTC&biw=994&bih=461&safe=active&ssui=on#safe=active&tbm=isch&q=sponges
Sexual Reproductive
▪Both
▪Release sperm into water
▪Captured choanocytes of another sponge
https://www.google.com/search?q=sexual+reproduction+of+sponges&espv=2&biw=994&bih=461&source=lnms&tbm=isch&sa=X&ved=0CAYQ_AUoAWoVChMIjKjB3vajyAIVSKweCh1U7Qas&safe=active&ssui=on#safe=active&tbm=isch&q=sperm+of+sponge&imgrc=cOG8ENGbkcWNrM%3A
Asexual
▪Budding
▪Both▪New organism develops from outgrowth▪Cell division https://www.google.com/search?
q=sexual+reproduction+of+sponges&espv=2&biw=994&bih=461&source=lnms&tbm=isch&sa=X&ved=0CAYQ_AUoAWoVChMIjKjB3vajyAIVSKweCh1U7Qas&safe=active&ssui=on#safe=active&tbm=isch&q=asexual+reproduction+in+sponges&imgrc=O8QM-gYQQnZyWM%3A
Hexactinellida▪Sponges with a skeleton made of 4 and/or 6 siliceous spicules
▪Found in Northern and Antarctic water
▪“Glass Sponges”https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8&safe=active&ssui=on#q=calcarea&safe=active&ssui=on https://www.google.com/search?
q=glass+sponges&es_sm=93&source=lnms&tbm=isch&sa=X&ved=0CAgQ_AUoAmoVChMI_P-XuP6jyAIVjDk-Ch31xgTC&biw=994&bih=461&safe=active&ssui=on
Demospongiae
▪Largest class containing 90% of living sponges
▪“Bath Sponge”
https://www.google.com/search?q=sponges&es_sm=93&source=lnms&tbm=isch&sa=X&ved=0CAcQ_AUoAWoVChMI95nx6v2jyAIVwTw-Ch1wwwhT&biw=994&bih=461&safe=active&ssui=on
https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8&safe=active&ssui=on#q=calcarea&safe=active&ssui=on
Calcarea▪Cellular sponges made out of Calcium carbonate
▪Found in tropical waters
▪“Grantia”
http://micro.magnet.fsu.edu/optics/olympusmicd/galleries/darkfield/grantia.html
https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8&safe=active&ssui=on#q=calcarea&safe=active&ssui=on