Sponges belong to a group of animals that scientists classify as Po-lifer and are among the simplest of animals, lacking tissue and organs. They filter water through the various chambers within it, absorbing nutrients
Biologists classify animals by their body structure, the way their body structure develops, and by their DNA.
Because they are living animals, like starfish and sea cucumbers.
The classification system used by biologists to categorize animals is called taxonomy. It organizes animals into hierarchical groups based on their shared characteristics and evolutionary relationships.
Biologists use a system called taxonomy to identify and classify organisms. This system categorizes organisms based on shared characteristics and genetic relationships. By examining an organism's physical traits, genetic information, and evolutionary history, biologists can assign it to a specific group in the taxonomic hierarchy.
Phylum
Biologists who classify living things are taxonomists, and the science is called taxonomy.
Marine biologists.
plants, animals, monera, protists, fungi there are only 5 kingdoms
they thought they were plants
Early scientists classified sponges as plants because of their stationary nature and lack of obvious sensory organs. It was not until the 18th century that sponges were recognized as animals due to their ability to move, feed, and reproduce like other animals.
Scientists classify sponges as simple animals because they are multicellular organisms that lack tissues and organs found in more complex animals. Sponges also feed by filtering particles from water, which is a characteristic of animals rather than plants.
a plant