The motion tool is in the head. It does not have an outer frame / graft except the Nautilus. The inner frame is composed of lime, the shape is flat and pure white. The body consists of 2 parts, the head and body connected by the neck. Cephalopod breathing system occurs exchange of H2O in the mantle cavity carried by the gills.
The digestive system of cephalopods is food captured by tentacles, then inserted into the mouth, destroyed and softened by the tongue of the stomach, into the esophagus, stomach and absorbed by the intestines through the anus. Behind the stomach there is a bag of liquid black ink which will be released when facing danger.
Examples of cephalopods
What are examples of cephalopods? Examples of animals including the cephalopod class are:
1. Loligo (squid), has 8 hard hands and 2 long tentacles, white body, edible.
2. Sepia (cuttlefish), its body size is bigger than squid.
3. Octopus (octopus), the catcher's hand is 8 pieces.
CHARACTERISTICS - CHARACTER OF CEPHALOPODA (FILUM MOLUSCA)
• Feet are in the head, not grafted (except nautilus) • Moving slowly with tentacles, fins, and fast by spraying water • Skin color changes according to the environment (because of chromator substances on the skin) • Separate genitals Example: loligo indica (cumi), Octopus vulgaris (octopus), Sephia sp. (cuttlefish), nautilus
The common characteristics of cehalopoda animals are:
1. a mollusc that has a clear head and large eyes
2. the leg muscles are modified into hands, tentacles around the mouth, and funnels which are the outlet of the mantle cavity. (feet located on the head)
3. generally does not have an outer shell, but has an inner shell made of lime / chitin
4. Has ink pockets / glands
5. Has a role as a food source of fish and is a seafood that has high protein content.
6. Types of cephalopods that have an outer shell and do not have an ink bag, Nautilus papillus
Example: Loligo indica (squid), Sepia sp. (cuttlefish), the shell is reduced and located inside, while in Octopus vulgaris (octopus), the Nautilus papilus does not have a shell
Reproduction of females produces eggs equipped with shells. Fertilization occurs in water
The shape or size of its head is striking, which is surrounded by arms or tentacles
I hope this helps
