Biology, 18.07.2019 22:00, janessa0804

The key evolutionary development of animals seen for the first time in sponges is that of

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The key evolutionary development of animals seen for the first time in sponges is that of Multicellularity. A Multicellular organism has a longer lifespan than an unicellular organism and since it has multiple cells, it can perform more functions. Sponges do not have distinct circulatory, respiratory, digestive, and excretory systems – instead the water flow system supports all these functions.

answered: ijeomaokoro2264

The key evolutionary development of animals seen for the first time in sponges is that of Multicellularity.
Multicellularity means having or consisting of many cells or more than one cell to perform all vital functions. Sponge is a member of the phylum Porifera. It is a simple animal with any cells, but no mouth, muscles, heart or brain. It is any primitive multicellular aquatic animal that constitute the phylum stated above.

answered: Guest

there are mainly three domains in biological classification namely; archaea, bacteria, and eukarya.

archaea includes all the prokaryotic cells which are characterized by their lipid membranes. they have branched hydrocarbon which is attached to glycerol through an ether linkage.

bacteria includes all the prokaryotic cells, the cell membrane of which are made up of the unbranched fatty acid chain. in addition, they are attached to glycerol through an ester bond.

eukarya includes all the eukaryotic cells, that is, the cells contain a nucleus and other membrane-bound cell organelles.

they can be autotrophic as well as heterotrophic, unicellular as well as multicellular

they include kingdoms like protista, plantae, animalia, fungi et cetera.

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The key evolutionary development of animals seen for the first time in sponges is that of...