Eukaryotic cells are includes a nucleous , membrane enclosed nucleous and different zonated organs like : Endoplasmic reticulum , Mitochondrian and three kinds of RNA instead one .
The class of invertebrates in which the young one looks completely different from the adult form is known as <em>holometabolous organisms.</em>
In holometabolous organisms, the young one known as the larva is completely different from the adult and the process in which the larva transforms into an adult is known as <em>metamorphosis</em>.
For the process of metamorphosis, the following life stages occur,
Adult ---> egg---->larva--->pupa ---> adult
E.g is a butterfly in which the larva (caterpillar) looks completely different from the adult butterfly.