Question
While comparing invertebrate groups, a worm has a fluid-filled cavity fully lined by mesoderm and divided by septa. The feature being tested is:
Correct Answer: B
true coelom
Annelids are coelomate animals. Their true coelom is lined by mesoderm and often partitioned by septa, supporting movement as a hydrostatic skeleton. This MCQ belongs to the Annelida topic in Animal Diversity-I and is written to test concept understanding rather than memorized wording.
Annelids are coelomate animals. Their true coelom is lined by mesoderm and often partitioned by septa, supporting movement as a hydrostatic skeleton. This MCQ belongs to the Annelida topic in Animal Diversity-I and is written to test concept understanding rather than memorized wording.
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