Question

Column I contains larval stages and column II contains the group to which it belongs. Match them correctly and choose the right answer.

Column I	Column II
A. Planula	1. Annelida
B. Tornaria	2. Mollusca
C. Trochophore	3. Arthropoda
D. Bipinnaria	4.Hemichordata
E. Glochidium	5. Echinodermata
	6. Coelenterata

• A. A-$6$, B-$4$, C-$1$, D-$5$, E-$2$
• B. A-$2$, B-$3$, C-$1$, D-$4$, E-$6$
• C. A-$5$, B-$4$, C-$3$, D-$2$, E-$1$
• D. A-$4$, B-$3$, C-$2$, D-$1$, E-$5$

Answer 1

The correct option is A A-$6$, B-$4$, C-$1$, D-$5$, E-$2$

In many animals, the development of young one is not direct but it has to metamorphosized to look like an adult. The juvenile stage of the young one is known as a larva. The larva is quite different from the young one and to go through different stages to look like an adult e.g annelids, insects. The planula is freely swimming, the bilaterally symmetrical larva of phylum Cnidaria, tornaria is the larva of some balaanoglossus, trochophore is freely swimming marine larva of Annelida, Bipinnaria is the larva of Echinodermata, glochidium is the larva of freshwater mussels i.e molluscans. Thus the correct option is A.