porifera ( sponges )
DESCRIPTION
Porifera ( Sponges ). By: Laia Alonso. Basic Information. Kingdom: Animalia Subkingdom : Parazoa Phylum : Porifera Phylum porifera is also known as those with pores . Special Features. - More than 8,000 known species (900 are fresh water, and the rest are salt water) - PowerPoint PPT PresentationTRANSCRIPT
Porifera (Sponges)
By: Laia Alonso
Basic Information Kingdom: Animalia Subkingdom: Parazoa Phylum: Porifera Phylum porifera is also known as those with
pores.
Special Features - More than 8,000 known species (900 are
fresh water, and the rest are salt water) - Sponge taxonomists guess there are15,000
species in the world. - Can reproduce sexually or asexually - They feed through pores on their outer walls - Lives in water environments
Special Features (II) - Has a multicellular body, no organs, and few
tissues - No nervous system - Fossil sponges are one of the oldest known
animal fossils - They are filter feeders, over 100 liters of
water a day - Body is full of pores
When it appeared Scientists have found, in rocks, traces of the
chemical 24-isoprophylcholestane, which they say has to be found inside sponges around 1,800 million years ago.
Some fossils found around 580 million years ago have been classified as demosponges.
A type of sponge called Archaeocythids, which were very common and scientists found several of, were found 530 million years ago, but died out 490 million years ago
Life Cycle Found from the polar to the tropics and in clear and
quiet oceans Reproduce asexually or sexually In asexual they produce the sperm and the egg.
When they connect it attaches to a rock and waits to be formed.
In sexual the male releases the sperm, and when it comes across a female it attaches. Eventually a larva will be released and it can pick a spot to grow on.
Small sponge growing on the base of an adult sponge, and then breaking away. Called budding.
If one is cut or injured, it will also regenerate itself.
Life Cycle (II) From where it decides to stay, it will start do
develop itself Development can change depending on the
environment In average, they live around 20 years Using asexual reproduction, can live up to 200
years When dead, they usually disintegrate
Feeding Absorbs water through his pores. This water provides it with food and oxygen. The water is moved through the sponge
because of the currents. The food that the sponge takes is with this is
then used. It flows through the pores. They capture 90% of the bacteria
Respiration Respiration is unique. It absorbs the oxygen, these diffuse, and get
oxygen from the flowing water system. In this system, many soluble waste products
also use diffusion. Depending on the type, archeocytes remove
mineral particles and take them out into the water currents or either incorporate them into their skeletons.
Bibliography http://sites.google.com/site/animalbiologyspri
ng2010/porifera/life-cycle
http://en.wikipedia.org/wiki/Sponge http://animaldiversity.ummz.umich.edu/site/ac
counts/information/Porifera.html
http://www.biology.iastate.edu/Courses/211L/Porif/%20Porifindx.htm
http://tolweb.org/Porifera/2464 http://www.infusion.allconet.org/webquest/
PhylumPorifera.html http://www.earthlife.net/inverts/porifera.html