What will be the resolution of a compound microscope where numerical aperture given is 1.5 at 240 wavelength of light?

TLS Online TPP Program

#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:

TLS Online TPP Program

#Question id: 38799

#Botany

Transformation in bacteria was discovered by:

TLS Online TPP Program

#Question id: 38800

#Plant Biotechnology

Q. Which of the following explants is preferred for meristem culture?

TLS Online TPP Program

#Question id: 38801

#Plant Biotechnology

Q. What is the optimal size of a meristem explant for culture?

TLS Online TPP Program

#Question id: 38802

#Plant Biotechnology

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