A) Peripanis
B) Lepidosiren
C) Neopilina
D) Protopterus
Correct Answer: C
Solution :
Connecting link is one, which exhibits characteristics of more than one groups. Neopilina, is a connecting link between phylum-Annelida and Mollusca. It shows annelidan Jharacters like presence of trochophore larva, eggs divide by spiral cheavage as in polychaetes, presence of 5-6 pairs ofcenidia, 6 pairs of neohridia. 8 pairs of retracter muscles and two pairs of auricles. On the other hand, molluscan characters of Neopilina are presence of shell and mantle, presence of a flat muscular foot as found in chiton and presence of soft and dorsovemrally flattened body.
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