MCQ
All flatworms differ from all roundworms in having
- ATriploblastic body
- ✓Solid mesoderm
- CBilateral symmetry
- DMetamorphosis in the life history
✓
Answer
Correct option: B.
Solid mesoderm
b
Flatworms (Platyhelminthes) and roundworms (Aschelminthes) both possess triploblastic body, bilateral symmetry and metamorphosis in the life history. But flat worms differ from all roundworms in having solid mesoderm. The mesodermally derived tissue includes a loose tissue called parenchyma and this tissue includes fills the body space, i.e., space between the body wall and more specialized tissue or organs.
Flatworms (Platyhelminthes) and roundworms (Aschelminthes) both possess triploblastic body, bilateral symmetry and metamorphosis in the life history. But flat worms differ from all roundworms in having solid mesoderm. The mesodermally derived tissue includes a loose tissue called parenchyma and this tissue includes fills the body space, i.e., space between the body wall and more specialized tissue or organs.
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