Review Questions
Annelids have (a):
- pseudocoelom.
- true coelom.
- no coelom.
- none of the above
Hint:
B
A mantle and mantle cavity are present in:
- phylum Echinodermata.
- phylum Adversoidea.
- phylum Mollusca.
- phylum Nemertea.
Hint:
C
How does segmentation enhance annelid locomotion?
- Segmentation creates repeating body structures so the entire organism functions in synchrony.
- Segmentation allows specialization of different body regions.
- Neural segmentation allows annelids to localize sensations.
- Muscle contractions can be localized to specific regions of the body to coordinate movement.
Hint:
D