RationalWiki's 2020 Fundraiser

There is no RationalWiki without you. We are a small non-profit with no staff – we are hundreds of volunteers who document pseudoscience and crankery around the world every day. We will never allow ads because we must remain independent. We cannot rely on big donors with corresponding big agendas. We are not the largest website around, but we believe we play an important role in defending truth and objectivity.

If everyone who saw this today donated $5, we would meet our goal for 2021.

Fighting pseudoscience isn't free.
We are 100% user-supported! Help and donate $5, $20 or whatever you can today with PayPal Logo.png!

Donations so far: $1680Goal: $3500


From RationalWiki
(Redirected from Sponge)
Jump to: navigation, search
Oo er, missus.

A sponge is an animal that lives in the sea. They feel very spongy.[citation NOT needed]

Significance to the evolution of multicellular life[edit]

This experiment shows that single-celled organisms may have formed multicellular ones. First get a sponge, and chop it up into several small pieces. These pieces are then forced through a sieve so fine it separates the individual cells that make up the animal. Then, view it through a microscope to see the individual cells clumping together. After waiting for a while, the cells will clump to form the original multicellular organism.[1] This does not work with goats.[citation NOT needed]

Furthermore, if you were to do the same experiment, but mix up the cells of different species of sponges, the sponges would all assemble into their separate species.