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TLS Online TPP Program

#Question id: 10809

Sieve element sap is rich in sugars and other organic molecules, These molecules represent an energy investment for the plant. How their loss be prevented when sieve elements are damaged?

#Unit 6. System Physiology – Plant
  1. Short-term sealing mechanisms not involve sap proteins
  2. long-term mechanism for preventing sap loss entails closing sieve plate pores with callose   
  3. For preventing sap loss using smooth endoplasmic reticulum (SER) which covers the sieve areas  
  4. long-term mechanism for preventing sap loss opening of the sieve tube in angiosperm
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TLS Online TPP Program

#Question id: 19048

#Unit 13. Methods in Biology

HPLC, the analytical performance improves when 
TLS Online TPP Program

#Question id: 19049

#Unit 13. Methods in Biology

What is the nature of mobile phase in reverse phase chromatography? 
TLS Online TPP Program

#Question id: 19050

#Unit 13. Methods in Biology

The relative adsorption of each component of the mixture is expressed in terms of its
TLS Online TPP Program

#Question id: 19051

#Unit 13. Methods in Biology

Select the correct statement regarding paper chromatography from the following.
TLS Online TPP Program

#Question id: 19052

#Unit 13. Methods in Biology

Amino acids detected by spraying the plate with ninhydrin solution is an example of
TLS Online TPP Program

#Question id: 19053

#Unit 13. Methods in Biology

The principle on which thin layer chromatography is based is that the ____________