Ascarisis characterized by which of the following?
Correct answer: B. Absence of true coelom and metamerism
- A. Presence of true coelom and metamerism
- B. Absence of true coelom and metamerism
- C. Presence of true coelom but the absence of metamerism
- D. Absence of true coelom but thepresence of metamerism
Explanation
Ascaris does not have a true coelom. Ascaris is an example of a pseudocoelomate organism. It possesses a pseudocoelom, which is a body cavity that is not entirely lined by mesoderm. This is in contrast to true coelomates, where the body cavity is completely lined by mesoderm.
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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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