Q. Assertion: Cybridization is a valuable tool for transferring traits like cytoplasmic male sterility (CMS) and herbicide resistance in crops like rice and tobacco. 

Reason: Cybrids contain the nuclear genome of only one species, which ensures the plant retains its primary species characteristics while gaining specific cytoplasmic traits.

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#Question id: 38793

#Plant Biotechnology

Q. Which of the following statements best explains the limitation of meristem culture for producing virus-free plants?

A. 

B. 

C. 

D. 

TLS Online TPP Program

#Question id: 38794

#Plant Biotechnology

Q . What is the primary biological principle that allows thermotherapy to work for virus elimination? 

TLS Online TPP Program

#Question id: 38795

#Plant Biotechnology

Q. Which of the following is a significant drawback of using thermotherapy on whole plants? 

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#Question id: 38796

#Plant Biotechnology

Q. Thermotherapy is noted to be effective against which specific types of pathogens? 

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#Question id: 38797

#Plant Biotechnology

Q. Why might a plant that survives thermotherapy be at a disadvantage later on? 

TLS Online TPP Program

#Question id: 38798

#Plant Biotechnology

Q. Assertion (A):Thermotherapy combined with meristem (shoot-tip) culture is more effective than either method alone for eliminating certain plant viruses.

Reason (R): Some viruses such as Potato virus S (PVS) and Potato virus X (PVX) can only be eliminated when heat treatment is followed by shoot-tip culture, and larger shoot tips taken from heat-treated plants show better survival.

Choose the correct option: