Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

11.

Cranium is made up of

  • 8 bones

  • 12 bones

  • 10 bones

  • 16 bones


12.

The function of surfactant is/are

  • facilitating lung expansion

  • maintaining the stable size of the alveoli

  •  to reduce the surface tension on the alveoli

  • all of the above


13.

Two chief functions of the leaves are

  • photosynthesis and respiration

  • photosynthesis and transpiration

  • transpiration and respiration

  • respiration and digestion


14.

The most advanced type of inflorescence is

  • corymb

  • catkin

  • spadix

  • capitulum


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15.

carthamus tinctorius belongs to family

  • Asteraceae

  • Solanaceae

  • Malvaceae

  • Fabaceae


16.

The organism in which Kreb's cycle does not occur in mitochondria is

  • yeast

  • E.coli

  • Ulothrix

  • mould


17.

The plant undergoes wilting when

  • xylem is blocked

  • cambium is blocked

  • phloem is blocked

  • some roots are reduced in number


18.

Stomata open at night and closes during day in

  • xerophytes

  • gametophytes

  • mesophytes

  • mesophytes


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19.

Lucocytes (WBCs) are considered as true cells because

  • they possess nucleus

  • they do not contain haemoglobin

  • they show great power of movement

  • they are responsible forphagocytic activity


A.

they possess nucleus

Leucocytes are called true cells because they possess nucleus unlike RBC where nucleus are absent.


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20.

During muscle contraction

  • size of 'A' bands remain same

  • size of 'H' zone becomes smaller

  • size of 'I' band decreases

  • diameter of fibre increases


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