Manvir Toor Arthropods

The three distinct features Arthropods have is that they all have a bilateral symmetry, they have an open circulatory system and they have simple tubes. 

An interesting arthropod I found was the praying mantis. It is an arthropod because its an insect, it has 6 legs, it has an exoskeleton and it is an invertebrate which means it has a backbone. The praying mantis also has a segmented body. 

Interesting facts: 

-Can turn their heads from side to side at 180 degrees

-Their eyes can see movements from 60 feet away

-Over 1,500 species of praying mantis world-wide 

Manvir Toor Squid Diagram (Cephalopod)

We got the chance to dissect a squid and see its internal organs. What I found most interesting about this animal was that it is a mollusc and it's from the class cephalopod. Also I found it really cool how their tentacles and arms are attached with their head. I found the internal organs interesting too, especially the ink sac. I got the chance to use the ink sac and got the chance to write stuff with it like my name. The squid is useful in its environment because it acts like both a prey and a predator. When it is a predator, it uses it's sharp teeth and it's suction cups, which are on its tentacles to hold its prey. When the squid is a prey, it releases a jet full of ink when it is in danger. When it releases ink, it gives the squid a chance to quickly swim away by using its siphon to move quickly.