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