Which of the following is a living fossil?
A. Holothuria (Sea cucmber)
B. Antedon (Feather star)
C. Ophiothrix (Brittle star)
D. Echinus (Sea urchin)
Answer:A
Which of the following is a living fossil?
A. Holothuria (Sea cucmber) B. Antedon (Feather star) C. Ophiothrix (Brittle star) D. Echinus (Sea urchin)