1. molluscs
1.1. general characteristics
1.1.1. bilateral symetry
1.1.2. live in water or wet places
1.2. bivalves (mussel...)
1.3. body
1.3.1. head with sensorial organs
1.3.2. visceral mass (where there are the organs) inside a membrane
1.3.3. foot
1.4. 3 gruups
1.4.1. gastropods (sanils...)
1.4.2. cephalopods (squid...)
2. arthropods
2.1. myrapods
2.1.1. terrestrials
2.1.2. dump enviroments
2.1.3. cylindrica body divided in segments
2.1.4. thorax and abdomen are joined together
2.2. arachnids
2.2.1. head + thorax = cephalothorax
2.2.1.1. 6 pairs appendages
2.2.1.1.1. 1 pair of antenae
2.2.1.1.2. 1 pair CHELICERAE (to feed on)
2.2.1.1.3. 4 pair of legs
2.2.2. terresrials
2.2.3. contains most of the organs
2.3. crustaceans
2.3.1. aquatic
2.3.2. cephalothorax + abdomen
2.3.2.1. 2 pairs of antenae
2.3.2.2. 5 pairs of legs
2.3.2.2.1. one of them are clws (pincas)
2.4. insects
2.4.1. head + thorax + abdomen
2.4.1.1. head
2.4.1.1.1. 1 pair of antenae
2.4.1.1.2. an adapted mouth
2.4.1.1.3. 2 compound eyes and many simple eyes
2.4.1.2. thorax
2.4.1.2.1. 3 pair of articulated legs
2.4.1.2.2. 1 or 2 pair of wings
2.4.1.3. abdomen
2.4.1.3.1. segmented not appendages
3. platyelminthes
3.1. commn characteristics
3.1.1. bilateral symetry
3.1.2. soft body
3.1.3. no legs
3.1.4. flat body
3.1.5. aquatic or terrestrial habitat
3.1.6. most of tehm ar PARASITES
3.2. nematodes
3.2.1. round shaped body
3.2.2. aquatic or terrestrial habitat
3.2.3. SOME of them are PARASITES
3.3. annellids
3.3.1. cylindrical and segmented body
3.3.2. SOME of them are PARASITES
3.3.3. live evrywhere but in water
4. porifera
4.1. characteristics
4.1.1. full of porus
4.1.2. soft body
4.1.3. no symetry
4.1.4. Set a Time Limit
4.1.5. sesile
4.1.6. asexsual
4.1.7. live in salt water
4.2. nutrition
4.2.1. filter feaders
5. cnidaria
5.1. characteristics
5.1.1. sesisles or motile
5.1.2. radial symetry
5.1.3. tentacles arround its mouth
5.1.4. stranings cells
5.1.5. carnivores
5.1.6. marin water
5.1.7. asexual