Jellyfish Oral And Aboral Diagram

Jellyfish the oral arms are highly branched feathery structures whilst in others these arms fuse to form a conical structure which may be truly massive in some jellyfish and which contains hundreds of frilly mouths.

Jellyfish oral and aboral diagram. The diagram above. Identify oral and aboral in a jellyfish. Polyps attach themselves to a solid surface and reproduce asexually by budding dividing or podocyst. Medusa always sexual polyp asexual.

Cross section diagram of a jellyfish oral surface aboral surface plane of from biol 0604 at the university of hong kong. The polyp is a sessile form usually stalk like or funnel like in shape. Sea anemones attach themselves to rocks on their aboral sides opposite the mouth. Identify oral and aboral in a hydra.

Cnidarians jellyfish sea anemones and corals have an incomplete digestive system meaning that one end of the organism has a mouth and the opposite end has no opening from the gut coelenteron. Nematocyst discharged stinging cell. The body of an adult jellyfish consists of a bell shaped hood enclosing its internal structure and from which tentacles are suspended. The bells of jellyfish represent the aboral side.

Jellyfish come in a huge range of forms however their body construction is reasonably similar. What is their life cycle. This complex life cycle is ancestral for scyphozoa and pelagiidae 11 12. Each tentacle is covered with cells called cnidocytes a type of venomous cell unique to the phylum cnidaria.

The jellyfish anatomy diagram shows how the large domed hood also called a bell forms the major upper surface and encloses its inner makeup of primitive organs. For example the tentacles of sea anemones corals and jellyfish surround the mouth so they are on the oral side. They have between four and eight oral arms which they use to capture and maneuver food to their mouth orifice. The oral and aboral sides of a sea anemone left and a jellyfish right.

The bell also provides axis support for its stinging tentacles or lappets. For this reason the end of the organism with the mouth is referred to as the oral end from latin ōrālis meaning of the mouth and the. The life cycle of jellyfish consists of two main stages. There is no radial canal as there is in aurelia the stomach has deep clefts in its aboral floor.