Animal Kingdom Question 698
Question: Sea fan belongs to
[CPMT 2005]
Options:
A) Echinodermata
B) Crinoidea
C) Mollusca
D) Coelentrata
Show Answer
Answer:
Correct Answer: D
Solution:
Sea fan (Alcyonacea) is sessile colonial anthozoan of phylum Coelenterata; these are radially symmetrical, diploblastic organisms with the gastrovascular cavity.
Echinoderms are triploblastic deuterostomes with organ systems and pentaradial adults and bilateral larval forms. Class Crinoidea is the oldest one of living echinoderms.
Molluscs are bilaterally symmetrical, triploblastic organisms with organ system and complete digestive tube. Thus, the correct answer is option D.
BETA
