SCIENCE
ZOOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Earthworm
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Leech
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Liver-fluke
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Threadworm
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Detailed explanation-1: -Platyhelminthes and sponges are classic examples of acoelomates.
Detailed explanation-2: -Flatworms are not coelomates. They don’t have a body cavity; hence called acoelomates. They have an incomplete digestive system, with only one opening. These organisms do not have a fluid-filled cavity between the digestive tract and the body wall. Examples-flukes, tapeworms, planaria, etc.
Detailed explanation-3: -Organisms in which coelom is absent are Spongilla, sea-anemone, Planaria and liver fluke, hence are, called acoelomates.
Detailed explanation-4: -Fasciola is Liver fluke belonging to class Trematoda, phylum Platyhelminthes. Platyhelminthes animals are acoelomate animals. Both Ascaris and Ancylostoma belong to phylum Aschelminthes which are pseudocoelomate animals.