0
Because they didn't move about about as most animals do. =)
Wiki User
∙ 14y ago
Wiki User
∙ 13y agothey thought that sponges were one celled
Add your answer:
Earn +20 pts
What did people think sponges were 200 years ago?
Until about 200 years ago people thought that sponges were aquatic plants.
What are organisms that use budding?
hydras, sponges, flowers or any plants... many cells also
Why are sponges classified as an animal?
Because no other animal has anything like collar cells..
Necessary features are sponges or cnidarians lacking in order to have a more mobile lifestyle?
Stimulation is needed to make sponges more mobile. Once the senses are heightened, a rapid response is fired in cnidarians which triggers movement.
What does the presence of fossil coral sponges shellfish and trilobites indicate about the past climate of the Grand Canyon area?
That it was once underwater.
What did early biologists think sponges where?
they thought they were plants
What did people think sponges were 200 years ago?
Until about 200 years ago people thought that sponges were aquatic plants.
Did people once think sponges were plants?
cause they looked funny like donkeys!!!!!!!!
Do sponges have shells?
No. Sponges only have a few different types of cells and are among the most divergent animal species. They are sessile and were formerly thought to be plants.
How sponges live?
They filter the water for food. Scientists thought they were plants for a long time. They now say they are animals.
What is sponges plants or animals?
Sponges are animals of the phylum Porifera
What are two autrotrophs?
plants and sponges
What are more underwater plants?
Coral, Seaweed and Sponges
Why do you confuse sponges with plants?
Sponges look like plants. They do not appear to move and they are firmly attached to their substrate as if by roots. Unless you follow a sponge's life cycle, and see that the young sponges are motile, swimming freely in the water, and observe that sponges are not photosynthetic, obtaining their food by filtering microscopic organisms from the water, you might be confused.
How many young do tube sponges have at once?
345434
Is sponge a fungi?
Because we wanted to call them sponges. Sponges belong to the animal kingdom since they are heterotrophic. Fungi derive food from breaking doown orgainc material in soil. Sponges feed on existing material. This is the difference.
Does water soil or sponges grow plants the best?
soil is better
