Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

51.

The number of RBCs in man increases if he lives at a higher altitude, this is because

  • there is more oxygen at the mountains

  • there is less oxygen at mountains

  • more heat is required to be produced in the body for keeping warm

  • there are no germs in the air in mountain


52.

Foramen magnum is situated in

  • buccal cavity 

  • base of skull

  • left auricle 

  • vertebrae


53.

The genes and splenium in brain are associated with

  • cerebellum

  • crebrum

  • medulla oblongata

  • vermis


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54.

Scala vestibuli is connected with

  • fenestra rotundus

  • fenestra ovalis

  • scala tympani

  • scala media


C.

scala tympani

The vestibular duct or scala vestibuli is a perilymph-filled cavity inside the cochlea of the inner ear that conducts sound vibrations to the cochlear duct. It is separated from the cochlear duct by Reissner's membrane and extends from the vestibule of the ear to the helicotrema where it joins the tympanic duct.

The scala vestibuli and scala tympani are filled with perilymph. At the apex of cochlear duct (scala media), scala vestibuli and scala tympani communicate by a narrow junction called helicotrema.


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55.

The friction between the eyelids and the cornea is avoided by the secretion of

  • lachrymal glands

  • conjunctiva and eyelids

  • hardarian glands

  • Meibomian glands


56.

Tendrils exhibit/twining of tendrils is due to

  • thigmotropism

  • seismonasty

  • heliotropism

  • diageotropism


57.

Flowering dependent on cold treatment is

  • cryotherapy

  • cryogenics

  • cryoscopy

  • vernalisation


58.

Sunken stomata occur in

  • xerophytes

  • hydrophytes

  • mesophytes

  • opsanophytes


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59.

Metha Jahar which is useful in rheumatism is obtained from

  • Aconitum napellus

  • Colchicum

  • Exogonium

  • Licorice


60.

Ball and socket joints can be seen in

  • wrist 

  • fingers

  • neck

  • shoulders


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