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Sponges (poriferans) are very simple animals that live permanently attached to a location in the water - they are sessile as adults. There are from 5,000 to 10,000 known species of sponges. Most sponges live in salt water - only about 150 species live in fresh water. Sponges evolved over 500 million years ago.
The body of this primitive animal has thousands of pores which let water flow through it continually. Sponges obtain nourishment and oxygen from this flowing water. The flowing water also carries out waste products.
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∙ 11y ago
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∙ 14y agoacoelomates
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Why were sponges first classified as pants?
no they are animals
What do Early scientists classified sponges as?
Rfjdbd dn
Why are sponges classified as animals than plants?
due to their internal and external structures
Why do you think a sponged is classified as n animal?
Because there are living cells in it(Ocean Sponges)
Fishes amphibians repitiles birds and mammals are classified in the phylum porifera?
The phylum Porifera is sponges.
How many types of sponges are there?
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.
Sponges are classified as animals because they cannot?
because they cannot produce there own food like other plants!
Why are sponges classified as an animal?
Because no other animal has anything like collar cells..
Do the elephant and sponge come under the same kingdom?
Yes, they are both classified as animals, in the kingdom Animalia.(Some sponges much more closely resemble plants.)
Are sea sponges decomposers?
No, sea sponges are not decomposers. Sponges are filter feeders.
What animal features do sponges share with all other animals?
Sponges are made up of two different types of organisms - one type are plantae, the other anamalia. Although it is debatable, sponges are classified as anamalia because part of them is animal.
Do sponges have unicellular in them?
no sponges are not unicellular.
