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 presence of metamerism, is also incorrect because Ascaris lacks metamerism as well.
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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