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Phylum Porifera
Who lives under a pineapple under the sea?
Not Sponges!!!!!!!!!!!!!!
Characteristics of Sponges
 Lives in in aquatic environments, mostly marine environments
 They don’t have any organs
 Has no nervous system
 All are filter feeders
 Reproduce sexually or asexually
Anatomy
 Osculum
 Colar cell
 Pore cell
 Spicules
 Mesenchyme is a gel layer around the outside
Digestion
 Cells absorb nutrients
 Their holes which water passes through
 Green Algae can attach to them and give them nutrients
 Capture small crustaceans and cells will begin digestion
 They can not pursue their food
Respiration
 Their cells breath for them
 Water improves the breathing as well
 Pores of sponges absorb the water
 Starts the breathing process
 Water travels through the pores
 Oxygen containing water must travel throughout the sponge
Internal Transport
 Pores let water travel through body
 No blood (circulatory system)
 It’s all water based
 Simple Diffusion
 O2 take from water
 CO2 released into water
Excretion
 Gas expels into the surrounding water and kills the waste
products
 Using its pores helps kill waste
 No urinary system
 It uses carbon dioxide
 They smell bad because of nitrogen substances
Response
 Chemical defenses
 Carbon dioxide
 Nitrogen
 Needle –like spicules
 Regeneration
Movement
 Sessile (do not move)
 They sway in the water but very slowly
 The water causes movement
 When their young they move around m0re
 Adult sponges don’t have to because of defenses
Reproduction
Asexual Reproduction
Budding
Pieces of sponges regenerate into a new one
Fragmentation
Sexual Reproduction
Male sponge would release a sperm into the water then
it goes to the female sponge
Examples of sponges
.Glass Sponges
.Calcareous Sponges
.Demospongiae
.Chicken Liver
.Black-ball sponge
Etc……….
Facts
 They lack tissues, neurons and a gut
 They can regenerate themselves
 Sponges can contain 16,000 other animals inside of it
 They are being used to find a cure for cancer
 A new type of sponge is found every year.
Work cited
 http://www.earthlife.net/inverts/porifera.html
 http://www.enchantedlearning.com/subjects/invertebrates/sponge
/
 http://w3.shorecrest.org/~Lisa_Peck/MarineBio/syllabus/ch7inverte
brates/Invertwp/2007/chelsea/dig.html
 http://sponges001.blogspot.com/2007/02/respiration.html
 https://sites.google.com/site/spongesrocks/respiration
 http://voices.yahoo.com/5-fun-facts-sponges-11202176.html
 http://www.infobarrel.com/10_Facts_About_Sponges