Statement I: For gynogenesis, complete ovule maturation is strictly necessary for successful induction.

Statement II: Unpollinated ovaries are generally preferred over pollinated ones for haploid production.

Choose the correct answer: 

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#Question id: 19457

#Life Sciences

Which microscopy can be used for viewing live cells and unstained tissues?

1. Fluorescence microscopy

2. Phase contrast microscopy

3. Dark field microscopy

4. Differential interference microscopy

5. Confocal microscopy

Which of the above combinations of microscopy is correct?

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#Question id: 19458

#Life Sciences

How phase contrast and DIC microscopy are used to image live cells and unstained tissues?

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#Question id: 19459

#Life Sciences

Phase-contrast microscopy depends on the refractive index of the region of specimen and generates image in which we see a pattern of 

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#Question id: 19460

#Life Sciences

In phase contrast unobstructed light passes through a region of________ that both transmits only a small percentage of the light and changes its phase slightly.

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#Question id: 19461

#Life Sciences

Phase-contrast microscopy is suitable for observing which kind of sample?

1. Single cells 

2. Group of cells

3. Thin cell layers

4. Thick cell layers

Which of the following options is correct?

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#Question id: 19462

#Life Sciences

Splitting of incident light and then recombining them to observe interference pattern occurs in which type of microscopy?