The coelom is a cavity lined by:
Correct answer: A. Mesoderm
- A. Mesoderm
- B. Epiderm
- C. Endoderm
- D. Ectoderm
Explanation
The coelom is a fluid-filled cavity which is lined by the mesoderm. It is present in between the gastrointestinal tract and the body wall. An organism that has a fluid filled cavity lined by the mesoderm are called coelomates.Roundworms have a cavity which is not lined by the mesoderm, thus they are known as pseudocoelomates. Those organisms that lack a fluid filled cavity are called acoelomates.
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About Kingdom Animalia
Animals are multicellular, heterotrophic eukaryotes whose cells lack cell walls and chloroplasts, with specialised tissues in most groups. Coverage includes body symmetry, tissue layers, coelom, segmentation and levels of organisation, plus major phyla such as Porifera, Cnidaria, Platyhelminthes, Annelida, Arthropoda, Mollusca and Chordata.
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