SCIENCE
ZOOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Jellyfish have no muscles or bones. This means that they must be:
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Monoblastic
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Diploblastic
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Tribloblastic
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None of the above
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Explanation:
Detailed explanation-1: -anemones, jellyfish, and corals-has a diploblastic level of organization (i.e., its members have two layers of cells).
Detailed explanation-2: -Jellyfish are diploblastic organisms, they are not triploblastic.
Detailed explanation-3: -The phylum Cnidaria (sea anemones, corals, hydras and jellyfish) is the likely sister group of the triploblastic Bilateria. Cnidarians are generally regarded as diploblastic animals, possessing endoderm and ectoderm, but lacking mesoderm.
Detailed explanation-4: -Jellyfish do not have muscles that actively open the bell after a contraction. Instead their body is filled with mesoglea, a mixture of fluid and elastic fibers that create a hydrostatic skeleton.
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