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NEET 2018
Exam
NEET
Year
2018
Subject
Botany
Chapter
Sexual Reproduction in Flowering Plants

NEET 2018 · Botany · Sexual Reproduction in Flowering Plants

Pollen grains can be stored for several years in liquid nitrogen...

Pollen grains can be stored for several years in liquid nitrogen having a temperature of

Options

  1. A−196oC- {196}^{o}C
  2. B−80oC- {80}^{o}C
  3. C−120oC- {120}^{o}C
  4. D−160oC- {160}^{o}C

Correct answer

A. −196oC- {196}^{o}C

Step-by-step solution

Storing pollen grains in −196oC- {196}^{o}C in liquid nitrogen is called cryopreservation.
It is a process where organelles, cells, tissues, extracellular matrix, organs or any other biological constructs susceptible to damage caused by unregulated chemical kinetics are preserved by cooling to very low temperatures.
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