Who did insects branch off from?

Question

So we have reptiles, amphibians, birds, mammals, fish and insects.

Birds branched off from reptiles(dinosaurs), mammals branched off from reptiles(small lizards)... and the rest?

Fish were the first animals that branched off from plants, I'm assuming amphibians branched off fish and reptiles branched of amphibians? Please tech me and cover all the animal segments.

Answer 1

First of all mammals did NOT branch off reptiles!!  More like amphibians!!

Fish did not branch off of plants either!!!

  There were simple celled animals as well as plants developing in the ocean concurrently!!

If you look at the Burgess shale record -it is in Canada -one will see many soft bodied animals with many and diverse attempts at structures to survive and flourish!!! Many look as insect like as is possible !! But it shows that in the oceans -where life began- diversification was flourishing and generating all sorts of diverse and exotic attempts at creatures making a living in all sorts of ways!!

  There were no apparent single line- as you would have it -from single cell plants to animals etc. It is a little more complex than that!!!!!!!!

Answer 2

Insects are arthropods belonging to the Ecdysozoan clade.

http://www.palaeos.com/Invertebrates/808...

This position is not fixed however; ecdysozoa may not be a true clade.

http://chuma.cas.usf.edu/~garey/articula...

This question is much more complex than you realize and your assumptions are so far off the mark that I think you need more than what I can offer in this space. Perhaps this would be a good place to start:

http://tolweb.org/tree/

Answer 3

Hmm, I never thought of that before.  Everything started from single celled organisms.  There's phytobacteria and zoobacteria.  Phytobacteria turned into plants, and zoobacteria turned into animals.  

Fish evolved into amphibians, and everything else evolved from amphibians.

But, I can't see insects evolving from an amphibian.  So, I guess they just evolved straight from zoobacteria.

Answer 4

I believe that  Insects branched off of earlier invertebrates. Also, fish aren't descended from plants. They also come from primitive invertebrates. Other than that, I think you have everything down correctly.