The sense organs that are located in the head and mouth of a pig are the eyes, ears, nose and tongue. These organs are for sight, hearing, smelling and tasting, respectively.
The sensory organs located on the mouth and head of a fetal pig are not the same as adults. These organs include the eyes and nose.
The sensory organs developed around the mouth in an attempt to help the creature eat - that being the primary reason for senses. Because all the sensory organs were concentrated around the mouth that was the beginnings of the head. So you see - the concentration of sensory organs was the reason for the head. There was no head to begin with. The head (and brain) developed because that was where all the sensory organs (and mouth) were. As for an advantage. It might be advantageous to have your sensory organs as high as possible. The reason for this is obvious for sight and sound. Smelling however would benefit more if it were located in the feet. Consider dogs and pigs. As soon as they start smelling they put their nose (and the rest of the head as well) to the ground. Feeling is not found concentrated in the head but is omni-localized.
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In an insect, the sensory structure is located in the head, not the abdomen. Its sensory organs are its antennae, which allows it to smell and taste. In some insects, like cicadas, the sensory organs are in the abdomen because they lack the same antennae as other insects.
A main characteristic of all insects is a pair of antennae located on their heads. They are the sensing organs in arthropods.
The sensory organs located on the mouth and head of a fetal pig are not the same as adults. These organs include the eyes and nose.
The sensory organs developed around the mouth in an attempt to help the creature eat - that being the primary reason for senses. Because all the sensory organs were concentrated around the mouth that was the beginnings of the head. So you see - the concentration of sensory organs was the reason for the head. There was no head to begin with. The head (and brain) developed because that was where all the sensory organs (and mouth) were. As for an advantage. It might be advantageous to have your sensory organs as high as possible. The reason for this is obvious for sight and sound. Smelling however would benefit more if it were located in the feet. Consider dogs and pigs. As soon as they start smelling they put their nose (and the rest of the head as well) to the ground. Feeling is not found concentrated in the head but is omni-localized.
Because they need to be able to sense when a predator is approaching.
Because when they are in the water, part of their head floats atop so their predators don't see them. It makes it perfect for the sense organs to be on the top part of the head so it can see, hear, and eat its prey, or watch for its predators without being seen.
the eyes nose ear and mouth are on the head because they are the closest to your brain
The “Head-Foot” region contains the mouth and sensory organs as well as the foot, the foot contains organs for locomotion.
Skin, especially if it has hairs; Ears for gathering sounds and knowing in which direction it was emitted; Eyes, for seeing, focusing and estimating distance; The semicircular canals in the ears which tell us what our body position is; Tongue, for tasting and manipulating food in the mouth; Nerves, just everywhere; Facial skin can sense when something warm comes near to it; Nose, for smelling and making sense of odours; Teeth, their nerves inform about the teeth's health.
No
Poriferans (sponges) lack many common characteristics of animals such as a head or a mouth. Typically poriferans do not have eyes, ears, as well as other sense organs. Poriferans do not possess major organs such as heart, stomach, muscles, or even a nervous system.
Head/Foot - Has sense organs and is used for mobility. Mantle - Covers the body mass and can secrete a shell in some species. Body - Contains the main organs. Located above the head/foot.
An amphid is one of a pair of chemosensory sense organs positioned laterally on the head of a nematode.
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