What work sheet? I'm great in Biology!
Hold on I can help you with this it's gonna take me maybe 10-20 min
Phylum Porifera
The phylum Porifera ("pore-bearing") consists of approximately 5,000 species of sponges. These asymmetrical animals have sac-like bodies that lack tissues, and are usually interpreted as representing the cellular level of evolution
This could be the different times you did the experiment
