no they are animals
Where square pants
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sponge bob square pants
due to their internal and external structures
Because there are living cells in it(Ocean Sponges)
sponges -apex
The phylum Porifera is sponges.
The first sponges were natural. They are some of the oldest animals to ever live on earth.
Man made sponges or artificial sponges were developed first by the DuPont company. Sponges were manufactured first in 1940. They also invented nylon.
Sponges are classified as animals because they are multicellular, heterotrophic organisms that lack cell walls. They also have specialized cells and tissues, even though they lack complex organ systems.
There are four classes of sponges classified so far. The classification is based on the difference in basic cell structure and type. They are,Calcarea - has single nuclues and single external membrane.Glass Sponges - has multinucleated cell.Demosponges - same as calcerea but their spicules are made of silica whereas for Calcarea it is made of calcite.Homoscleromorpha - same as Demosponges except for the different body structure it has. It is the most recently classified class.
because they cannot produce there own food like other plants!