Which one of the following theories for ascent of sap was proposed by an eminent Indian scientist $J$.$C$. Bose?

  • A
    Pulsation theory
  • B
    Relay pump theory
  • C
    Transpiration pull theory
  • D
    Root pressure theory

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Potometer works on the principle of

Which of the following methods may be used to determine the quantitative loss of water from two surfaces of a dorsi-ventral leaf?

Match the theories given in column-$I$ with the names of scientists listed in column-$II$. Choose the answer which gives the correct combination of the alphabets.
Column-$I$ (Names of theories) Column-$II$ (Names of scientists)
$(A)$ Relay pump theory $(p)$ Stocking
$(B)$ Transpiration cohesion theory $(q)$ Sir $J$.$C$. Bose
$(C)$ Mass flow $(r)$ Godlewski
$(D)$ Pulsation theory $(s)$ Dixon and Joly
$(t)$ Ernst Munch

What does Darwin's potometer determine?

Which of the following is used to determine the rate of transpiration in plants?

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