SCIENCE
ZOOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Nymph
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Instar
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Trochophore
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Veliger
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Detailed explanation-1: -Trochophore larva is a 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 the prototroch, that enables them to swim.
Detailed explanation-2: -Mollusks (and annelids) have a unique larval form called a trochophore. It is a tiny organism with cilia for swimming.
Detailed explanation-3: -Bivalve mollusks have a biphasic life cycle wherein pelagic larvae (blastula, trochophore, and veliger) undergo settlement (pediveliger larva) and metamorphosis (juvenile stage).
Detailed explanation-4: -During the larval development molluscs grow from embryo to trochophore larvae.
Detailed explanation-5: -Trochophore larva occurs in phylum annelida.