Advantage Of Having A Blind Gut The gastrovascular cavity is the primary organ of digestion and circulation in two major animal phyla the Coelenterates or cnidarians including jellyfish and corals and Platyhelminthes flatworms The cavity may be extensively branched into a system of canals In cnidarians the gastrovascular system is also known as the coelenteron and is commonly known as a blind gut or blind sac
Disadvantages of a blind gut The animal cannot ingest and egest at the same time The ingestion digestion and egestion are not systematic There is a mixing of digested and undigested food Digested food is also expelled during egestion Through gut having two body openings a mouth at one end and an anus cloaca common Having a through gut confers obvious advantages in terms of food acquisition and processing as it entails the food moving in at the mouth and out at the other end the anus it is thus reasonable to assume that the invention of a through gut must have been quite a breakthrough in the evolution of animal body plans
Advantage Of Having A Blind Gut
Advantage Of Having A Blind Gut
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4 2 Explain ONE advantage of the gut mentioned in 4 1 One advantage of a through gut is efficient digestion and absorption of nutrients The unidirectional flow of food allows for specialized regions along the gut to perform specific digestive functions This leads to better nutrient extraction compared to a blind gut 4 3 Name TWO phyla The cavity may be extensively branched into a system of canals In cnidarians the gastrovascular system is also known as the coelenteron and is commonly known as a blind gut or blind sac since food enters and waste exits through the same orifice What is the difference of gastrovascular cavity and digestive tract
Evolution of a through gut with an oral and an anal opening conceivably marked a breakthrough in early animal history as basal animals have a blind ending gut with only one opening How this occurred and whether a through gut evolved only once or several times is a matter of debate Perhaps the different modes by which guts develop in animal embryos that are used for the classification of The diagram below shows the gut in an animal from one of the phyla you have studied 4 1 State whether the animal has blind gut or a through gut 4 2 Explain ONE advantage of the gut mentioned in 4 1 4 3 Name TWO phyla that have animals with a gut like the one in the 2 diagram 1 4 4 State what is meant by cephalisation 6
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Humans have a complete digestive system with specialized organs like the stomach and small intestine that do different jobs allowing for more efficient absorption of nutrients Register to view Blind gut One digestive opening used for both ingestion of food and egestion of undigested material Cannot become specialized with separate regions having separate functions Advantages of a Through Gut 1 No Mixing of digested undigested and partially digested food moves in 1 direction 2
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