Q. Variants that are stable in cell culture but lose resistance after plant regeneration or sexual reproduction are known as:

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#Question id: 38819

#Plant Biotechnology

Q. Odontoglossum ringspot virus (ORSV) has been eliminated using virazole from:

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#Question id: 38820

#Plant Biotechnology

Q. The efficiency of ORSV elimination in Cymbidium increases when shoot-tips are:

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#Question id: 38821

#Plant Biotechnology

Q. Assertion (A):All plants regenerated through meristem culture, with or without chemo- or thermotherapy, are completely virus-free.

Reason (R):Plants regenerated through these methods must be tested for the presence of specific viruses by a process known as virus indexing.

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#Question id: 38822

#Plant Biotechnology

Q. Assertion (A): Chemicals like Virazole and Actinomycin D are added to plant culture media to produce virus-free plants. 

Reason (R): These antiviral chemicals inhibit the multiplication of viruses within the shoot-tips

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#Question id: 38823

#Plant Biotechnology

Q. Assertion (A): Virazole is considered a versatile antiviral agent in biotechnology. 

Reason (R): It has demonstrated effectiveness against Potato Virus X in plants as well as various DNA and RNA viruses in animals.

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TLS Online TPP Program

#Question id: 38824

#Plant Biotechnology

3. Assertion (A): The elimination of Odontoglossum Ringspot Virus (ORSV) from Cymbidium is only possible through the use of Virazole. 

Reason (R): Treating Cymbidium shoot-tips with specific antibodies before culture can improve the frequency of virus elimination.

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