problem 1) Define the terms:

i) Choesion - tension theory.

ii) Surface tension.

iii) Km value of an enzyme.

iv) Structure of PSI complex.

v) Transamination.

vi) oxidation of fatty acida.

vii) Synthesis of ethylece.

viii) Signal transduction.

problem 2) prepare the essay on the recent theories describeing the mechanism of transpiration.

problem 3) Briefly describe water potential and its components. Add a note on any one method of determining.

problem 4) Describe the mechanism of C₄ pathway. WhyC₄ plants are more efficient than plants?

problem 5) prepare the essay on pentose phosphate pathway and its significance.

problem 6) describe briefly the mechanism of fixation by Rhizobia bacteria.

problem 7) What are fats? describe the role of malonyl Co A and falty acid synthase in the biosynthesis of falty acids.

problem 9) Briefly describe the mechanism of action of cytokinins in plants. Add a note on their role in agriculture.

problem 10) describe the role of phytochromes in plantmorpho genesis.