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TLS Online TPP Program
#Question id: 38808
#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.
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TLS Online TPP Program
#Question id: 38809
#Plant Biotechnology
Q. Assertion (A): Prolonged cold treatment followed by shoot-tip culture can successfully eliminate plant viruses.
Reason (R):Exposure of chrysanthemum plants to 5°C for several months increased the proportion of virus-free plants for both chrysanthemum stunt virus and chrysanthemum chlorotic mottle virus.
TLS Online TPP Program
#Question id: 38810
#Plant Biotechnology
Q. Assertion (A):Increasing the duration of cryotherapy improves virus elimination efficiency.
Reason (R):Extending cold treatment at 5°C from 4 months to 9.5 months increased virus-free frequencies for both CSV and CCMV.
TLS Online TPP Program
#Question id: 38811
#Plant Biotechnology
Q. Assertion (A):Cryotherapy is generally more damaging to plants than thermotherapy.
Reason (R):Cold treatment causes greater physiological stress compared to heat treatment.
TLS Online TPP Program
#Question id: 38812
#Plant Biotechnology
Q. Which of the following statements regarding chemotherapy for virus elimination in plant tissue culture is CORRECT?
TLS Online TPP Program
#Question id: 38813
#Plant Biotechnology
Q. Thermotherapy is noted to be effective against which specific types of pathogens?