Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

41.

People who have migrated from the planes to an area adjoining Rohtang Pass about six months back 

  • Have more RBCs and their haemoglobin has a lower binding affinity of O2

  • are not physically fit to play games like football

  • Suffer from altitude sickness with symptoms like nausea, fatigue, etc

  • Suffer from altitude sickness with symptoms like nausea, fatigue, etc

849 Views

42.

Select the correct statement regarding the specific disorder of muscular or skeletal system

  • Muscular dystrophy-age related shortening of muscles

  • Osteoporosis-decrease in bone mass and higher chances of fractures with advancing age

  • Myasthenia gravis-Auto immune disorder which inhibits sliding of myosin filaments

  • Myasthenia gravis-Auto immune disorder which inhibits sliding of myosin filaments

452 Views

43.

Water containing cavities in vascular bundles are found in 

  • sunflower

  • maize

  • Cycas

  • Cycas

1404 Views

44.

Select the correct statement from the following regarding cell membrane.

  • Na+ and K+ ions move across cell membrane by passive transport

  • Proteins make up 60 to 70% of the cell membrane

  • Lipids are arranged in a bilayer with polar heads towards the inner part

  • Lipids are arranged in a bilayer with polar heads towards the inner part

500 Views

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45.

Gymnosperms are also called soft wood spermatophytes because they lack

  • cambium

  • phloem fibres

  • thick-walled tracheids

  • thick-walled tracheids


D.

thick-walled tracheids

Gymnosperms lack xylem fibres. Large amount of parenchymatous cells are present with secondary xylem tracheids. So, these are also known as softwood spermatophytes.

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46.

Vexillary aestivation is characteristic of the family

  • Fabaceae

  • Asteraceae

  • Solanaceae

  • Solanaceae

906 Views

47.

Select the correct statement from the ones given below with respect to Periplaneta americana

  • Nervous system located dorsally, consists of segmentally arranged ganglia joined by a pair of longitudinal connectives

  • Males bear a pair of short thread like anal styles

  • There are 16 very long Malpighian tubules present at the junctions of midgut and hindgut

  • There are 16 very long Malpighian tubules present at the junctions of midgut and hindgut

597 Views

48.

Maximum nutritional diversity is found in the group 

  • Fungi

  • Animalia

  • Monera

  • Monera

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49.

Motile zygote of Plasmodium occurs in

  • Human RBCs

  • Human liver

  • Gut of female Anopheles

  • Gut of female Anopheles

1012 Views

50.

Which one of the following statements is false in respect of viability of mammalian sperm ?

  • Sperm is viable for only up to 24 hours

  • Survival of sperm depends on the pH of the medium and is more active in alkaline medium

  • Viability of sperm is determined by its motility

  • Viability of sperm is determined by its motility

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