Final answer:
A newly-hatched invertebrate which has not yet developed all of its body parts is called a larva.
Step-by-step explanation:
A newly-hatched invertebrate which has not yet developed all of its body parts is called a larva. Larvae are the immature stages of many animals, including insects and some marine organisms. During this stage, the larva undergoes metamorphosis and gradually develops into its adult form.
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