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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.
Wiki User
∙ 13y ago
Wiki User
∙ 14y agoSponges are the most basic form of animal lacking true tissues. They fall into phylum Porifera.
Wiki User
∙ 14y agobecause they lack a nervous system and differentiated tissues and organs.
Wiki User
∙ 10y agoSponges are considered animals because they have the same cell stucture and type of metabolism as animals and reproduce in a similar fashion to many animals as well.
Wiki User
∙ 14y agobecause it breathes and eats
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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.
Name some sponges?
Hexactinellida, Calcarea, Demospongiae, andSclerospongiaeTechnically, however, the Sclerospongiae are not considered sponges. They are very similar, but they are not the same. Like bats and birds who have both evolved the ability to fly but are not the same types of animals, Slerospongiae have evolved and became very similar to sponges, but they are not sponges.
Why are adult sponges said o be sessile animals?
meaning that they live their entire adult life attached to a single spot. Meaning they're attached to some surface.
Which animals have pores?
Phylum Porifera (latin for 'pore-bearing). Commonly known as sponges.
What animals use budding?
One example would be sponges.
What primitive group of animals has no true tissues and no specific distinct shape?
Sponges
Why are sponges considered to be an evolutionary dead end?
No other animals are believed to have evolved from sponges, thus they win the title of "an evolutionary dead end."
What is sponges plants or animals?
Sponges are animals of the phylum Porifera
What makes sponges animals and not plants?
Sponges are heterotrophic, which is a characteristic of an animal and not a plant. Sponges are also multicellular, are made up from cells without cell walls, characteristics of the kingdom Animalia and NOT Plante.
Are sponges autotrophs?
No. Sponges are animals, which are heterotrophic.
Which species would be considered more primitive based upon the structure of their limbs?
There are many organism with a forelimb with the most primitive trait. These animals include certain species of monkey animals.
What species are sponges?
Sponges are animals of the phylum Porifera.
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.
What group are sponges divided into?
Sponges are animals of the phylum Porifera
Why are collar cell important in classifying sponges as animals?
why are collar cells important in classifying sponges as animals
What do sponges lack that make them more primitive and simpler?
Just finshed it on a test. Sponges lack a digestive track, symmertical plan, and nerce cells.
Are mushrooms and sponges fungi?
Mushrooms and toadstools are examples of fungi. Sponges are animals of the phylum Porifera. In biological terms, fungi form a kingdom. Plants have a separate kingdom. Animals have a separate kingdom.
