what is sactorial mouth where it is present

1.	what is sactorial mouth where it is present
Answer» Leeches are ectoparasites and they mostly live on the blood of vertebrate animals, like - humans, cattle, etc. They have a sanguivorous i.e. blood-sucking feeding habit. The blood-sucking habit of Leeches is supported by a special adaptation in their mouth.Their mouth is a narrow triradiate aperture that sits at the center of the pre-oral chamber of the oral sucker. The oral sucker (or anterior sucker) is a tiny hollow muscular organ present at the anterior end of the animal body.\xa0The pre-oral chamber is actually a cup-like depression at the ventral surface of the oral sucker. One ray of the mouth is in medio-dorsal position, while the other two are placed ventro-laterally.\xa0This specially modified mouth of the Leeches is called suctorial mouth. When a feeding leech firmly adheres to the host body, its suctorial mouth moves like a saw and makes a triradiate (i.e. Y-shaped) painless incision in the victim\'s skin. Then the oozing blood of the host is sucked by the Leech.

Discussion