Match the CORRECT combination of the phloem elements with its function.

            PHLOEM ELEMENTS                                                  FUNCTIONS

P) sieve tube elements                                    i) for protection and strengthening of the tissue

Q) sieve cells                                                  ii) store and release food molecules

R) companion cells                                        iii) food translocation in angiosperm

S) Phloem parenchyma cells                          iv) latex containing cells

T) Phloem fibers and sclereids                       v) help in flow of solute and show high, metabolic activity

U) laticifers                                                     vi) food translocation on gymnosperm

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#Question id: 2176

#XL - S Microbiology

The many pumps present in the membrane have interconnected and important functions. Which of the following functions is NOT correct?

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#Question id: 2177

#XL - S Microbiology

 The resting membrane potential in animal cells depends largely on nongated _____ channels.

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#Question id: 2178

#XL - S Microbiology

The magnitude of the membrane electrical potential is calculated by:

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#Question id: 2179

#XL - S Microbiology

Ion channels achieve selectivity in transport through all of the following mechanisms EXCEPT:

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#Question id: 2180

#XL - S Microbiology

How does inhibition of the Na+/K+ ATPase increase the force of heart muscle contraction?

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#Question id: 2181

#XL - S Microbiology

What is the expected effect on salt accumulation in the plant vacuole of a mutation in the plant vacuolar ATPase that decreases the H+ concentration in the vacuole?