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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.
It depends on the kind of sponge, because sponges, the real animal not the synthetic product, are asexual reproducers, and can grow from the tiniest cell of a sponge. It's okay to cut up a synthetic sponge though.
Sponges do have some differentiated cells that have different functions but they don't have true tissues like all other animals and plants do. Even though they're included in the Animal kingdom they also symmetry, which most other animals have.
though tiny holes in the sponge
False the tree of animals began with the human the human is classified as a animal even though it can talk walk and hold things.
Sponges were first though to be plants because, at first glance, they appear to be so. They are immobile, have no appendages to speak of, and lack a nervous and circulatory system. What sets them apart from plants, however, are two main things. The first being that they are filter feeders; they siphon water through their bodies and specialized cells with cillia catch the food and transport it to speceialized cells to be digested, whereas the vast majority of plants make their own food. The second is that most sponges start out as free-swimming larvae that eventually settle down onto a solid surface and transform into the sessile soft-bodied creatures we know as sponges.
there are a number of species of sea sponges if that is what you mean by "sponge".and it depends on the species if it does resemble a plant, some does or I think it does and some looks more like corals or so.
There is no fish called the sponge fish, though some fish eat sponges. Sponges themselves eat food such as plankton that they filter from the water around them.
Sorry to say but, NONE!! All animals do need complex care to survive and get the attention they need. I would say though, that cats, need less care than the rest. Or a fish, but you have to clean bowls, or tanks.
Plenty of animals are sessile, meaning attached to something like a plant. They include sponges, anemones, corals, barnacles, and sea squirts. Their larva larvae do swim around, though corals can reproduce by budding.
Plenty of animals are sessile, meaning attached to something like a plant. They include sponges, anemones, corals, barnacles, and sea squirts. Their larva larvae do swim around, though corals can reproduce by budding.
Sponges, mostly. Most worms are sexual and asexual reproducers though, too.