EVERYDAY SCIENCE

Detailed explanation-1: -trochophore, also called trochosphere, small, translucent, free-swimming larva characteristic of marine annelids and most groups of mollusks. Trochophores are spherical or pear-shaped and are girdled by a ring of cilia (minute hairlike structures), the prototroch, that enables them to swim.

Detailed explanation-2: -Both mollusks and annelids develop through a larval stage called a trochophore larva. Trochophore larvae are characterized by having a band of cilia that wraps around the body.

Detailed explanation-3: -Trochophore larvae develop into a veliger in marine taxa. The veliger larvae have a well-developed foot, shell, and other structures. A veliger will settle on the bottom of the water body and metamorphose into the adult form.

Detailed explanation-4: -Molluscs are generally regarded members of the Lophotrochozoa, a group defined by having trochophore larvae and, in the case of living Lophophorata, a feeding structure called a lophophore. The other members of the Lophotrochozoa are the annelid worms and seven marine phyla.

Detailed explanation-5: -They complete their development in three stages-the early trochophore, complete trochophore and late trochophore. Their mode of nutrition is mainly planktotrophic. Trochophore larvae are most commonly found in Mollusca and Annelida.