Read the following statements and find out the correct statement.
a. Cnidoblasts are used for anchorage, defense and for the capture of prey
b. The property of living organism to emit light is called bioluminescence
c. Prifers, sea walnuts, platyhelminthes and earthworms are monoecious or hermaphrodite
d. Aschelminthes, molluscs, echinoderms and hemichordates are dioecious or unisexual
e. Vertebrates have ventral musculr heart, kidneys for excretion and osmoregulation and paired appendages (fins or limbs)