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Dimethyl sulphoxide is a………………...

Dimethyl sulphoxide is a………………

A

a) Solidifying agent

B

b) Cryoprotectant

C

c) Fusogenic agent

D

d) Stimulant

Text Solution

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The correct Answer is:
B
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Why do we add dimethyl sulphoxide, glycerol or sucrose before cryopreservation?

{:((a),"Cryopreservation", -, "Preservation by " ),(,,,"cooling"),((b), "Protective agents" ,-,"Dimethyl"),(,,, "sulphoxide "),((c),"Organogenesis " , -, "Cell culture "),((d), "Somatic ", -, "Allium sativum" ),(,"embryogenesis",,):}

An organic compound (A) C_(6)H_(6)O gives violet colour with neutral FeCl_(3) solution. With NH_(3) in the presence of anhydrous ZnCl_(3) (A) gives (B) (C_(6)H_(7)N) . (A) with dimethyl sulphate gives ( C) (C_(7)H_(8)O) . What are (A), (B) and (C )? Explain the reactions.

Williamson synthesis of preparing dimethyl ether is a/an /

FULL MARKS-PLANT TISSUE CULTURE -ADDITIONAL QUESTIONS (1-MARK QUESTIONS)
  1. Source of agar is……………….

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  2. Synseeds are developed by encapsulating embryoids with……………

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  3. The optimal pH of culture medium is generally………………..

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  4. Identify the correct sequence regarding steps involved in PTC

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  5. Dimethyl sulphoxide is a………………

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  6. Assertion (A) : Incubation is followed by Inoculation. Reason (R ) :...

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  7. Assertion (A) : Sterilization helps to overcome microbes. Reason (R ...

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  8. Assertion (A) : Protoplasts are cells devoid of cell wall. Reason (R...

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  9. Assertion (A) : Development of root from callus is called caulogenesis...

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  10. Assertion (A) : Liquid nitrogen is used in cryopreservation techniques...

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  11. Identify the cryoprotectant

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  12. Identify the wrong statement from the below

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  13. Identify the plant tissue used for virus free germplasm

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  14. Match the following : {:("A. Solidifying agent","(i) Sucrose"),("B. ...

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  15. Identify the incorrect statement: (a) Explants are surface sterilize...

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  16. The enzymatic mixture for chemical isolation of protoplast is

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  17. The term used to define the ability of a cell to generate entire indiv...

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  18. The phenomenon of reversion of mature cells to meristematic state lead...

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  19. Somatic hybridization is achieved through………………

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  20. Identify the mismatched pair:

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