NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions


Given below is a table comparing the effects of sympathetic and parasympathetic nervous system
for four feature (a-d). Which one feature is correctly described

  • Feature Sympathetic nervous system Parasympathetic nervous system
    a) Salivary glands  Stimulate Secretion Inhibit Secretion
  • b) Pupil of the eye Dilate Constricts
  • c) Heart rate  Decreases  Increases
  • d) Intestinal peristalsis Stimulates  Inhibits


Which one of the following animals is correctly matched with its one characteristic and the taxon

  • Animal  Characteristic  Taxon
    Millipede  Ventral nerve cord  Arachnida
  • Duckbill platypus  Oviparous  Mammalia
  • Silverfish  Pectoral and pelvic fin  Chordata
  • Sea anemone  Triploblastic  Cnidaria


All mammals without any exception are characterised by

  • viviparity and biconcave red blood cells 

  • extra-abdominal testes and a four chambered heart

  • heterodont teeth and 12 pairs of cranial nerves

  • a muscular diaphragm and milk producing


Which one of the following pairs of the kind of cells and their secretion is correctly matched

  • Oxyntic cells  a secretion with pH between 2.0 and 3.0
  • Alpha cells of islets of Langerhans secretion that decreases blood sugar level
  • Kupffer cells a digestive enzyme that hydrolyses nucleic acids
  • Sebaceous glands a secretion that evaporates for cooling


Examine the diagram of the two cell types A and B given below and select the correct option

     A                B

  • Cell A is the rod cell found evenly all over retina

  • Cell A is the cone cell more concentrated in the fovea central is

  • Cell B is concerned with colour vision in bright light

  • Cell A is sensitive to low light intensities


A cricket player is fast chasing a ball in the field. Which one of the following groups of bones are directly contributing in this movement

  • Femur, malleus, tibia, metatarsals

  • Pelvis, ulna, patella, tarsals

  • Sternum, femur, tibia, fibula

  • Tarsals, femur, metatarsals, tibia


A lizard-like member of reptilia is sitting on a tree with its tail coiled around a twig. This animal could be

  • Hemidactylus showing sexual dimorphism

  • Varamus showing mimicry

  • garden lizard (Calotes) showing camouflage

  • Chamaeleon showing protective colouration


The figure given below shows three velocity substrate concentration curves for an enzyme reaction. What do the curves a, b, and c depict respectively

  • a-normal enzyme reaction,
    b-competitive inhibition,
    c-non-competitive inhibition.

  • a-enzyme with an allosteric modulator added,
    b-normal enzyme activity,
    c-competitive inhibition

  • a-enzyme with an allosteric stimulator,
    b-competitive inhibition added
    c-normal enzyme reaction

  • a-normal enzyme reaction,
    b-non-competitive inhibitor added
    c-allosteric inhibitor added


A person who shows unpredictable moods, outbursts of emotion, quarrelsome behaviour and conflicts with others is suffering from

  • borderline personality disorder (BPD)

  • mood disorder

  • addictive disorder 

  • schizophrenia.


The type of epithelial cells which line the inner surface of Fallopian tubes, bronchioles and small bronchi are known as

  • squamous epithelium

  • columnar epithelium

  • ciliated epithelium

  • cubical epithelium