Notes

class merostomaya have external copulation they do not do like sexual reproduction, they are in troub;e beacuse the fishermen tend to come and eat all their fish or mess upp the land that is pver there they also have specialized blood where it coagulates in the presence of bacteria which means that pharmautical companies would want to get it even mre.

Living fossils they are not the same as orginals but they are preyyu close
No body is arguing that these groips exists they do argue where they are at in terns of hireachy for the phykum arthopoda

These appendages the manables are found in most mouth parts of mandibulates and the the chelicerate moutparts are lso found there as well same with the Biramous which is appendages of crustaceans and chelicetates and the uniramous re appendages if the insects.

It is imporant to also speak on exopodite and the endopodite

Class crustacea and the order of decapoda
the big claws are used for feeding and defense same with big claws and walking claws and to scare off other males when looking for females.
It has to do with evolutionary biology and how they chose to expand on the gene that made the claws bigger


Arrowing crabs looks like their is an arrow coming out from it

cirripedia are the banarncles which creayes a little volcano where it grow s in
They are modified walking legs whch have hairs on them in which the animals claws at it and filters or a net and it colelcts small particles of food


isopoda has a fish on top that can hook into it and create a whole in which creates a parasite


now in copedpoda when from sensory attene to locomatoive

Class Insecta which are also called Hexapoda with arthopoda body plan

all insects have 4 wings
but flies only have 2 wings and 2 halteres. These are hughly modified second "wings" which are used for balance and is known to have this secret of sucess to being able to fly so quickly. This is a order synapmorphy of Diptera (flies)

even tho some insects dont have it they did at some point in their life spans which is why they might have a derived trait/

patterns in the iwngs for order lepidoptera are created in the scales of the wings and trhe eggs are laidd on the leave and the a;rbe and then th epupa


it is so imporant for the order hymenoptera to be able to gain pollen
. These are european honey bees that are able to pollinate the way they do

Order Hempitera is known as the true bugs bcause the wings dont completley cover the back of it and sometimes atriangular shape to