Q.Justify the statement: "Nematodes are protostomians but they are not eucoelomates."
You're viewing a preview — the full solution, concept, methods & PYQ mapping are locked.
Start your 14-day free trial to unlock the full solution →[!ANSWER] Nematodes are protostomian in their development but pseudocoelomate, not eucoelomate, in their body-cavity structure.
A true coelom (making an animal "eucoelomate") is a body cavity that is completely lined on all sides by mesoderm — mesoderm forms both the outer lining next to the body wall and the inner lining around the gut. In nematodes, however, the body cavity is a pseudocoelom: it is essentially a persistent embryonic blastocoel that lies between the mesoderm and the endodermal gut, without being fully enclosed by mesoderm on every side (the gut, in particular, lacks a mesodermal covering). …
Unlock everything free for 14 days
- Full step-by-step solutions
- Concept-first explanations
- Methods, shortcuts & mistakes
- PYQ mapping + timed mock tests
Full access for 14 days. No credit card required.