oral surface मीनिंग इन हिंदी

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The Paleozoic echinoderms were globular, attached to the substrate and were orientated with their oral surfaces upwards.
Some also use their articulated spines to push or lever themselves along or lift their oral surfaces off the substrate.
They may also occur on the mandibular retromolar pad and tonsillar areas, but any oral surface may be involved.
The physical characteristics of this order include well separated lateral plates, which expose the oral surface of radial ossicles.
The left side of the larval body becomes the oral surface of the juvenile and the right side the aboral surface.
The oral surface with the mouth is facing upwards and is surrounded by five, often divided rays with feathery pinnules.
The left hand side of the larva develops into the oral surface of the juvenile while the right side becomes the aboral surface.
Additionally, the alpha amylase has been suggested to prevent bacterial attachment to oral surfaces and to enable bacterial clearance from the mouth.
The organization of the system is somewhat different in ophiuroids where the medreporite may be on the oral surface and the podia lack suckers.
Egg brooding is quite common and usually takes place in special chambers on their oral surfaces, but sometimes the ovary or coelom is used.