Illustrate phylum Annelida are vascular beings
Illustrate the meaning when it is stated that beings of the phylum Annelida are vascular beings? From which phyla of the animal kingdom does this feature distinguish them?
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The categorization of such beings as vascular beings means that they contain a circulatory system, with vessels which distribute substances all the way through the body.
Cnidarians, Poriferans, and flatworms do not contain a circulatory system. In nematodes there is circulation of nutrients and gases through the pseudocoelom fluid.
Name the chemical substances which compose the plasma membrane?
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Give the name of the molecule which transports oxygen in red blood cells? Answer: The respiratory pigment of red blood cells is the hemoglobin.
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