Multiple Choice Questions

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MRI is not allowed in the following conditions except one. Identify the exception

  • Presence of pacemaker in the body

  • Pregnant women

  • Person suffering from stroke

  • Presence of metallic plate in the body for treatment of broken bones


C.

Person suffering from stroke

Magnetic Resonance Imaging (MRI) is primarily a medical imaging technique most commonly used in radiology to visualize detailed internal structure and limited function of the body. In medicine MRI is mainly used for looking at damage to soft parts of the body
muscles, tendons and ligaments as well as the brain. At the moment, MRI can only be done on patients who live still.


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Hormone responsible for the secretion of milk after parturition is

  • ICSH

  • Prolactin

  • ACTH

  • LH


Which of the following diseases is related to cadmium pollution?

  • Minamata

  • Pneumoconiosis

  • Anaemia

  • Itai- Itai


In a DNA molecule, distance between two bases is

  • 2 nm/ 20 Å

  • 0.2 nm/ 2 Å

  • 3.4 nm/ 34 Å

  • 0.34 nm/ 3.4 Å


Exine of pollen grain is made up o

  • pectocellulose

  • lignocellulose

  • sporopollenin

  • pollen kit


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Root cells of wheat has 2n = 42 chromosomes. Which one of the following is the basic chromosome number of wheat?

  • 42

  • 21

  • 7

  • 14


Balbiani rings are the sites of

  • DNA replication

  • RNA and protein synthesis

  • synthesis of lipids

  • synthesis of polysaccharides


Micropropagation is a technique for production of

  • true to type plants

  • haploid plant

  • somatic hybrids

  • somaclonal plants


First genetically modified plant commercially released in India is

  • golden rice

  • slow ripening tomato

  • Bt brinjal

  • Bt cotton


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Test cross is a cross between

  • hybrid and dominant parent

  • hybrid and recessive parent

  • two hybrid parents

  • two distantly related species