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due to their internal and external structures
because they cannot produce there own food like other plants!
no they are animals
Sponges are animals of the phylum Porifera
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Because no other animal has anything like collar cells..
Yes, they are both classified as animals, in the kingdom Animalia.(Some sponges much more closely resemble plants.)
plants and sponges
plants are classified by people putting plants in three different groups
Plants are classified in the domain Eukarya.
Coral, Seaweed and Sponges
they thought they were plants