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TLS Online TPP Program

#Question id: 19277

which of these statements correctly describes a portion of the pine life cycle? 

#Unit 9. Diversity of Life Forms
  1. Female gametophytes use mitosis to produce eggs
  2. Seeds are produced in pollen-producing cones
  3. Pollen grains contain female gametophytes
  4. A pollen tube slowly digests its way through the triploid endosperm
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TLS Online TPP Program

#Question id: 19449

#Unit 13. Methods in Biology

Better resolution of the image can be achieved by which of the following wavelengths? 
TLS Online TPP Program

#Question id: 19448

#Unit 13. Methods in Biology

Which of the following incident lights will give better resolution of a specimen?
TLS Online TPP Program

#Question id: 18896

#Unit 13. Methods in Biology

Negative Staining is used for examining.
TLS Online TPP Program

#Question id: 23279

#Unit 13. Methods in Biology

What will be the value of D if sin angle is 90o and oil immersion is used at λ=700?
TLS Online TPP Program

#Question id: 23205

#Unit 13. Methods in Biology

Which type of electrons are excited in SEM when intense electron beam is applied over sample?
TLS Online TPP Program

#Question id: 23204

#Unit 13. Methods in Biology

Shadow casting is a technique in electron microscopy visualizing