Arrow worm anatomy
A) lacks any coelom.
B) lacks a complete digestive tract.
C) has gills.
D) has well-developed circulatory and excretory systems.
E) is unlike any other invertebrate in having a many-layered epidermis.
Correct Answer:
Verified
Q5: The ossicles are penetrated by a meshwork
Q6: Pedicellariae are
A)larval sea stars.
B)the mouth-like openings into
Q7: The Chaetognaths
A)have radial symmetry.
B)feed on clams.
C)are small
Q8: The common name for chaetognaths is
A)arrow worms.
B)acorn
Q9: Tube feet run along the _ groove
Q11: The most active of all echinoderms are
Q12: The orientation of a sea star is
A)a
Q13: The calcareous plates found underneath the epidermis
Q14: The fossil record of echinoderms
A)is sparse with
Q15: Echinoderms are
A)mostly pelagic or free-swimming in open
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents