Multiple Choice Questions

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Pieces of plant tissue used in culture is called

  • explant

  • domaclone

  • inoculant

  • clone


A.

explant

An explant is the plant part that is excised from its original location and used for initiating a culture. The explant is treated with specific antimicrobial chemicals, the process called surface sterilization.


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Polyploid derived from two different species is called

  • autopolyploid

  • triploid

  • allopolyploid

  • monoploid


Acid rain is caused by

  • NO2

  • SO2 and NO2

  • SO3

  • CO2


Biolistic technique is used in

  • tissue culture process

  • gene transfer process

  • hybridization process

  • germplasm conservation process


The name of the pace maker of the heart is

  • lymph node

  • SA node

  • juxtaglomerular apparatus

  • semilunar valve


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Which of the following is related to humoral immunity?

  • T- lymphocyte

  • B- lymphocyte

  • I- lymphocyte

  • P- lymphocyte


Structural element of chromatin is

  • histone

  • acid protein and DNA

  • nuclear matrix

  • nucleosomes


Fertilization occur in

  • uterus

  • ureter

  • vagina

  • fallopian tube


The scientific name of the moth which produce tasar is

  • Bombyx mori

  • Antherae mylitta

  • Antherae assamensi

  • Philosomia ricini


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Ovule integument gets transformed into

  • seed

  • fruit wall

  • seed coat

  • cotyledons